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| Introduction | The necessity for an electronic communications policy | Employee reaction to imposed ECPs | Assimilating ECPs with existing policies | Access to electronic communication tools | Acceptable and unacceptable use | Representing the company in ones postings | Electronic fraud | Intellectual property | Computer viruses | Transmitting confidential information | Encryption | Retention and security of messages | Privacy of electronic communications | Consequences of misuse | Conclusion | Author biography | ||||||
| 1. Introduction | ||||||
|
Computer use in the workplace1 is now a standard occurrence. In the ordinary performance of their tasks employees are required to make use of increasingly sophisticated electronic communications tools. Computer networking, the use of e-mail facilities and Internet access have significantly broadened an employees access to information on the companys computer network, and the Internet has allowed employees virtually unrestricted access to the World Wide Web from their desktops. Never before has it been so difficult for employers to police the information which employees either access or disseminate in the business environment.
193
Highly sensitive business information and trade secrets can now be accessed and disseminated with relative ease and anonymity, with the incremental potential for exposing a company to loss and litigation. Moreover, abuses of the electronic communication facilities for non-business related activities, by employees who often unwittingly compromise the employer, occur daily in the business environment. How to police employee use of these electronic communications tools raises a number of vexed legal issues, as it is extremely difficult to differentiate between business and private usage, and in particular, to monitor the content of such usage. While
the use by employees of electronic communications tools for non-business
purposes will not increase direct costs to the company significantly,
the hidden and contingent costs to a company are potentially enormous:
lost productivity and potential exposure to law suits emanating from third
parties as a result of inappropriate use of these tools being the most
dominant.
To
reduce and potentially eliminate these potential risks and losses, companies
must address the issue of how best to control employee use of electronic
communications tools. This will require a re-education of both employer
and employee as to what dangers exist where appropriate controls are not
put in place and will necessitate the development of a detailed written
electronic communications policy (ECP), as well as educating employees
on the potential damage which reckless use of e-mail and the Internet
poses to the company.
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| 2. The necessity for an electronic communications policy | ||||||
194 By articulating
what is permissible and what is not, a company may be able to demonstrate
that certain activities engaged in by its employees fall outside the
course and scope of their employment with the company (thereby avoiding
vicarious liability for employees actions), when called on to
defend its position (or institute legal proceedings to protect or enforce
its rights).
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| 3. Employee reaction to imposed ECPs | ||||||
|
While
the imposition of ECPs in the workplace has distinct advantages for an
employer, the real or perceived rights of the employee will potentially
conflict with those of the employer.
Issues
of privacy aside, one of the most important issues is whether the implementation
of an ECP amounts to a change in the employees terms and conditions
of employment.2 While this has not yet been
tested in South African courts, it has been argued by certain labour lawyers
that the implementation of an ECP does not amount to a change in contract
and is part of the directives which constitute the ordinary and necessary
running of the business i.e. it is the prerogative of management (which,
for example, can be equated to changing working hours from 08:00 to 08:30).3
Employees could also argue that the implementation of an ECP is not a fair labour practice under the Constitution. It is, however, submitted that as long as there is a genuine business reason for implementing the ECP from a business point of view, it can be justified.4
195
It is also important to remember that in terms of employment law, employees have a right to strike in certain circumstances.5 Considerations of rights to privacy aside, it could be argued that the reading of e-mail by an employer could, for example, constitute a legitimate grievance. Employees could call to strike on the basis of such grievance and force the employer to abandon the ECP. |
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| 4. Assimilating ECPs with existing policies | ||||||
|
If the company has other formal policies, it might be necessary to co-ordinate the ECP with such policies (e.g. in an employee handbook). Other policies which may have some bearing on an ECP include:
The
ECP should not be at variance with other agreements which might apply
in given circumstances for example, the company may have third-party
software licence agreements permitting (under certain circumstances) simultaneous
home-installations of company-licensed software.
Finally, it is
important to carefully determine the scope of the ECP when measured against
the range of company facilities and equipment which might possibly be
involved. Does the company wish to reach e-mail facilities only? E-mail
and Internet browsers? Company-owned computers? What about fax machines,
or company-paid cellular phones?
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| 5. Access to electronic communication tools | ||||||
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Certain employees will be furnished with communication tools that are owned by the company to assist them in the performance of their jobs. The term electronic communication tools includes the following: 196
It
is important to remember that the tools are provided to facilitate business
communications and to enhance the productivity of company employees.
As the tools are owned by the company, it should be able to decide the
manner in which they should be used as well as to regulate their use.
Such
regulation should address issues pertaining to personal use of the communications
tools by employees. Decisions affecting such personal use by employees
must be clearly formulated and stated in an ECP, as this is the area
which is likely to create potential pitfalls regarding employee rights
to privacy in particular.
One
of the principal purposes of an ECP is to state, clearly, what kind
of privacy expectations employees should hold. Failure to do so will
entitle employees to argue with persuasion that both their common law
and constitutional rights to privacy are being abrogated by company
scrutiny of personal communications, notwithstanding that they may have
been conducted in the employers time, at its expense and with
company-owned communications tools.
Every
ECP should include a well-drafted computer security policy, which will
contain guidelines on individual password management (e.g. requirements
that passwords contain a mixture of letters and other characters, are
of minimum length, are not written down, and are changed frequently).
In most cases, effective execution of these procedures requires that
employees choose (and periodically change) their own passwords. The
simple fact that employees are permitted to choose their own passwords
should not support an argument-by-implication that they thereby have
justifiable privacy expectations in the material protected by the password.6
Every ECP should address the question of which persons conduct will be affected or regulated:
197 Non-employees
should be provided access to secure communications facilities only with
some form of written agreement restricting their use and disclosure
of confidential and proprietary information to which such facilities
may provide them access. In addition, such persons should be provided
with notice of the companys rules of access and use
or a specially tailored ECP.
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| 6. Acceptable and unacceptable use | ||||||
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To what extent
should an employer permit personal (i.e. non-company related) use of e-mail
facilities and other communications facilities by its employees?
The use of e-mail as a communication medium in the workplace is an attractive proposition for many reasons:
198
Perhaps the better
practice is to permit restricted personal use of e-mail, either internally
or externally, and then incorporate other policies (such as privacy expectations,
misuse of company resources, etc.) around this pragmatic acknowledgement.
If
restricted personal use is permitted, it becomes essential for
the company to discuss (and set) employee expectations of privacy.7
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If personal use
is permitted, there must inevitably be some articulated constraints
on such use. For example, permissible personal use should not be allowed
to consume significant amounts of the employees workday, and should
not be permitted to consume substantial amounts of the companys
intranet bandwidth. E-mail software is now able to embed photographs,
voice recordings and even full motion video into once simple e-mail messages.
Employees making excessive use of these multimedia e-mail capabilities
will consume significant portions of the companys bandwidth, leading
to network performance problems and increased network operation costs.
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Employers would
be well advised to impose an outright prohibition on certain broad classes
of Internet-related activities, both to prevent losses and to establish
defences in possible litigation.8 Two of
these are now discussed.
In South Africa, the provisions of the Films and Publications Act 65 of 1996 prohibit the distribution of child pornography,9 explicit violent sexual conduct, beastiality, explicit sexual conduct which degrades a person and which constitutes incitement to cause harm or explicit infliction of extreme violence. 199
While
this Act does not deal specifically with the Internet, the definition
of a publication is wide enough to include the Internet.
Although
the provisions of this Act seek to regulate the distribution of films
and publications (including pornography), one must interpret them having
due regard to the fundamental rights to privacy10
and of freedom of expression11 which are
protected in the Bill of Rights. See also chapters 12 and 13.
With
regard to hate speech, the right to freedom of expression
does not extend to advocacy of hatred that is based on race, ethnicity,
gender or religion and that causes incitement to cause harm. It must be
noted that like pornography, it is only the distribution of such
material which is an offence under the Act. See also chapter 12.
With
regard to defamation12 by companies and
employees of companies, one of the important issues is where the duty
to regulate lies; whether there is a duty on the company or Internet service
provider (ISP) to regulate the publication of material (whether it be
by way of e-mail or a bulletin board on the companys intranet) is
a moot point. Unfortunately, this issue has not been decided in South
Africa and companies that decide not to regulate and instead do nothing,
could be exposing themselves to a possible claim for negligence on grounds
that they owed a duty of care to their employees and third parties to
impose some restrictions.13
In
so far as e-mail might be the medium for the defamatory statement in the
workplace, it is important to remember that the defamation will probably
occur at the place where the offending material is accessed. This might
impact on defamatory e-mail received from a foreign jurisdiction, as a
South African court will only have jurisdiction in South Africa if the
words were published (accessed) in South Africa.14
Choice of law and jurisdiction on the Internet are therefore important issues for any company as it could be argued that the company is exposing itself to the risk of being sued in countries which have access to the companys web site or access e-mail which emanates from one of its employees which practically means every country in the world. Do those countries have a right to insist on some form of censorship? Which countrys laws apply? What if the company has operations in both countries?
200
The proper knowledge of an ISPs terms and conditions of use of that service, especially in so far as it might pertain to web site content, or the use of e-mail, is therefore very important and is usually contractually determined.15 For
South African companies, the Business Protection Act16
offers some degree of protection for South African businesses in that
while a foreign judgment for damages is enforceable in South Africa, no
foreign judgment which provides for the payment of multiple or punitive
damages can be enforced by a foreigner in South Africa.
Until such time
as clear rules have been laid down and principles established, companies
wishing to sell their products abroad and engage Internet users in foreign
countries, but who wish to avoid the danger of being sued in another country,
should carefully consider the objectives of their web site. If necessary,
they should impose certain restrictions on the interactive use of the
web site, particularly with regard to those interactive services and activities
which are normally regulated around the world, such as pornography.
These laws deal
with data collection, protection, privacy, confidentiality and security.
Many countries have broad data protection laws, or have sector-specific
privacy laws (e.g. the United States). Data protection is based on the
principle that personal data should not be automatically available to
others, and even where such data is processed by another party, the individual
must be able to exercise a substantial degree of control over the data
that it uses.
South
Africa does not have any data protection legislation, as at the time of
writing (May 1999). The closest legislation it has is the Open Democracy
Bill.17 While the right to privacy is recognised
in South Africa as a fundamental right, the right to privacy must be balanced
against the right to access, use and have personal information disclosed.
201
In the absence of specific South African legislation, it is important to take cognisance of the European Unions Data Protection Directive,18 as this directive prevents companies operating in the European Union from transmitting data electronically to non-member countries, such as South Africa, unless those countries provide adequate protections for the information although a practical system of exemptions and special conditions also applies. The obvious question is, what is adequate protection? According to the European Commission Policy Paper released in July 1997, deciding whether a countrys privacy rules are sufficient will be determined on a case-by-case basis. It is important to bear in mind that the directive would cover the processing of personal data by European subsidiaries situated in South Africa, for example. It would restrict the subsidiary from transmitting data to its parent country if it is located in a country which does not have adequate protection measures. This poses potential business constraints on the conduct of company business.
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6.4
Content
A distinction must be drawn between unacceptable content and illegal content. Unacceptable content must not be sent or shown to others, whereas illegal content should not even be acquired or possessed. The acceptability of content will vary from viewer to viewer. Therefore, the wording of the ECP is aimed at preventing others from being offended by content (even if it is legal content). On the other hand, an adult who is making a measured choice to access various kinds of content will be limited only to legal content, whether or not it might be acceptable to colleagues.
202
It is important, however, for the drafters of the ECP to remember not to impose regulation merely for the sake of regulation. It is appreciated
that sexual harassment can occur through electronic means such
as coarse jokes sent via e-mail, salacious screen-savers and crude graphics.
Racial and religious discrimination cases can also be based on offensive
electronic content, regardless of the senders intentions. In such
cases, it is important to remember that South African courts do not consider
the disclosure of defamatory words or behaviour, to an outsider who is
unaware of its defamatory character or meaning, as publication.19
The framers of
the ECP should decide whether or not to prohibit the possession of unacceptable
content. On the one hand, were the company to impose such a standard,
it would of necessity require that someone in the company adjudicate on
what is acceptable or not. On the other hand, failure to delineate a clear
policy in this regard could leave the company without the defence that
the employee was on a frolic of his own.
It is essential
that any ECP contain the limitation that no illegal content be accessed
or downloaded. Of course, the illegality of content will vary
from jurisdiction to jurisdiction as previously discussed, and presents
a veritable minefield to both employers and users in general, as it requires
a broad
knowledge of foreign and domestic law. 6.4.3
Examples of unacceptable and illegal content
Employees should be forbidden from using any communication tool which:
203
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It is a principle
of South African law that an employer can be held liable for a delict
committed by its employee, as long as it can be shown that (1) the employee
is in fact liable for the delict, (2) that an employer/employee relationship
existed at the time the delict was committed and (3) the delict was committed
by the employee in the course and scope of his or her employment.
This phrase refers to acts committed by the employee in the exercise of
the functions to which he/she was appointed, including such acts as are
reasonably necessary to carry out the employers instructions.20
Can a South African
employer be held liable for the content of e-mails generated by its employees?
While South African law recognises that the employer creates a risk that
third parties may be harmed by its employees committing wrongful acts
in the course of their duties and that it should be liable to compensate
people who suffer harm when the risk materialises, the question posed
above has not yet been tested in South African courts. The answer will
depend on all of the facts and circumstances of the case. The enquiries
will include an examination of the nature and content of the e-mail, the
employees position, title, scope of responsibilities (and perhaps
experience), and the nature of the employer (public or private company,
close corporation or partnership). Most importantly one should consider
whether the offending act was committed in pursuance of the execution
of the employers business or whether the employee can be said to
have engaged in a frolic of his own.
It is important to remember that binding contracts can be concluded by e-mail and an employer could be bound to a contract entered into by the employee for and on behalf of the company if the employee was either authorised to conclude the contract or if the employees responsibilities typically included such activities.21
204
It is also important to remember that the contracting parties need not be human beings, as sale agreements are now commonly being concluded with electronic agents online.22 In addition, when entering into purchase and sale agreements online, it must be remembered that South African Reserve Bank (SARB) exchange controls apply to all residents in South Africa who wish to remit moneys abroad.23 This applies to payment in respect of goods purchased abroad. South African residents are also required to pay customs duties and VAT on any imported items when they are collected at the point of entry (which is usually the recipients local post office). E-mail can contain
binding admissions, just as can regular mail or other documents.
Again the determination will turn on authority and scope of employment.
To avert this possibility,
some companies have taken to suggesting that their employees draft fairly
lengthy electronic signatures (which are affixed automatically
to the end of all e-mail messages) that expressly disclaim the employees
authority to act for or bind the employer.24
Even
if the employee disclaims official connection with the employer (i.e.
by stating that the following are only my opinions, and do not reflect
those of my employer), can the reputation of the employer be adversely
affected? Certainly. In most cases, e-mail from company-provided systems
will contain routing information that identifies the companys Internet
domain (e.g. name-of-your-company.co.za).
Aware of this possibility,
some employees have taken to posting their
205
From the above it should be apparent that employees need to be educated in the risks of sending e-mails or browsing the Internet. It often happens that they are horrified to learn that their every move leaves an audit trail (irrespective of whether or not anyone actually is monitoring their exchanges or later decides to review the system logs). After employees have been educated in these points they are much more likely to act with circumspection in their posting and surfing (both official and personal). While company-related
postings should all be professional, messages sent to certain newsgroups
may be so closely related to important parts of the companys business
as to merit special rules. These rules may include pre-publication review
approvals by the marketing, engineering and legal divisions in a company.
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In an electronic
environment, it is possible to manipulate an e-mail so that it appears
as if the e-mail is being sent by another person (i.e. somebody impersonates
another persons identity).
In most instances
it will be almost impossible to determine the true identity of the sender,
because of our reliance on e-mail headers (which would normally reveal
the name and e-mail address of the sender). These headers would have
been manipulated by the sender and it would be incorrect to assume in
such circumstances that the sender must be the source of the e-mail
simply because he/she appears to be working from these otherwise trustworthy
electronic addresses.
While there are
emerging technologies and practices that could verify the true identity
of the sender of the e-mail, the present situation is fraught with unreliability.25
In South Africa,
there have been no reported civil decisions involving electronic
fraud.
It is therefore imperative that an ECP prohibits impersonation in all forms. The policy is aimed at using anothers e-mail facility without permission.
206
If a company implements a policy of banning impersonation in all forms, it should remember that there are certain instances where anonymity should be protected and where the sending of anonymous messages should be permitted, and even possibly encouraged. It must be stressed that these should only apply in limited instances. For example, so-called internal whistle-blowing hot lines may be available to employees to report incidents of potential wrongdoing by other employees which are brought to their attention. Furthermore, a company may permit its employees to feel that they can safely surf the Internet for important medical information, without disclosing their identity to others (for example to locate current information on HIV treatment programmes). Furthermore, employees may want to post messages to newsgroups without having their e-mail addresses harvested by vendors who send unsolicited commercial e-mail (i.e. SPAM). In such cases anonymity would be appropriate. However,
in an electronic environment true anonymity can be quite hard to attain.26
If it is important to permit anonymous use of electronic tools, then
special arrangements need to be made (e.g. use of anonymous remailers27)
and employees should be informed about invisible audit trails and system
logs that may capture information about their Web activities, so that
they can make responsible, informed decisions about where and how to
surf the Web.
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| 9. Intellectual property | ||||||
|
One of the main attractions
of the World Wide Web is that it is possible to download magazine articles,
reports, song titles, videos and photographs, all of which are protected
by copyright. A computer software program placed on the Internet can
also be downloaded at sites around the world28
and re-posted, and yet it never leaves the computer of its designer.
It is also possible to download copyrighted graphic and textual material
posted to a web site where it can be changed, merged with other material,
returned to cyberspace and perhaps even sold as a different product
altogether.
This has created a headache for publishers and a potential nightmare for the creators of articles, songs, software and films, as the owners will want to protect their materials. Laws to date simply do not adequately cover electronically transmitted copyright material. Even if they did, it would be extremely expensive and time-consuming to monitor possible infringements and to litigate.
207
Web site operators are beginning to take measures to protect the content of their web sites against indiscriminate copying musical recordings may be available in their entirety only after a credit card has supported their purchase; before that time, only snippets or excerpts can be copied or downloaded.29 However, much online content is not technically protected against copying, and in this lies a potentially serious risk for unwary users (and their corporate employers) where such copying may be feasible (as a technical matter), it is still likely to be illegal. Electronic content
is subject to copyright. Under South African copyright law, copyright
is the right given to the owner of certain types of works not to have
his/her work copied without authorisation.30
Generally speaking, the work is copyrighted when it has been created
by the authors original skill and effort and has been reduced
to a material form and is therefore not merely an idea. See further
chapter 2.
In South Africa,
one does not have to register copyright (as is the case with other forms
of intellectual property, such as patents or trademarks). A copyright
situation will arise automatically as soon as something tangible is
produced as a result of the authors original skill and effort.31
For the most part, once an expression is entered into a computer in
a form that can be read on a screen, it is considered fixed in a material
medium even if it is never printed out or saved to a disk. This means
that employees surfing web sites are not entitled to freely copy and
distribute content obtained from those web sites owned by companies
without obtaining prior permission. This extends to copying images and
text found on the web site. Copyright law, however, does not prohibit
an employee quoting something interesting that he/she finds online,
as long as the source is acknowledged.
In so far as
trademarks are concerned, a trademark is essentially a means of identifying
a product whether it be in the form of goods or services. It extends
to a brand name and any sign capable of being represented graphically.
Employees should therefore be on the lookout for trademark notices placed
on web sites informing Internet users that graphics, logos, domain names
and other materials are protected by trademark law.
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A computer virus is an unauthorised software program or portion of a program that is introduced into a computer or network. The purpose of a virus is to damage data files, delete data or perform other harmful actions. Depending on the purpose of a particular virus, the reformatting of an infected diskette or hard drive may be the only method of dealing with the virus. This will result in the loss of all the data on the diskette or hard drive.
208
Computer viruses are becoming more common and the number of viruses being detected has increased. The downloading or copying of unauthorised software onto employees PCs is one of the easiest ways for these viruses to invade a computer or network. See further chapter 15. It is therefore
important that the company not permit its employees to download data
of whatever nature except possibly to a stand-alone PC set aside for
this purpose. Further, all information downloaded onto the PC should
be checked with virus scan software, which the company should have.
The ECP should
accordingly contain stringent rules in this regard to safeguard its
data and computer system.32
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| 11. Transmitting confidential information | ||||||
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Companies are
making increasing use of the Web to manage and distribute proprietary
and confidential information. For example, inter-company e-mail messages
can contain information on business plans, and can carry as attachments
detailed spreadsheets, drawings, charts and supporting documentation.
Moving beyond e-mail, the company may place equipment design and operations
manuals on the companys intranet, to enable authorised users
to access this material when they need it, on demand. Increasingly,
Web-based information storage and retrieval is becoming the rule, rather
than the exception.
In this context, there may be heightened risk of accidental electronic disclosure of confidential information.33 Disclosure could occur in a number of ways:
209 Complicating
the matter, it may be increasingly difficult to keep track of which
audience is entitled to see what material. While technological systems
can be relied on to assist in maintaining confidentiality, they cannot
assure confidentiality and must be complemented by employee training
and awareness.36
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Premature disclosure
of confidential information which has or is likely to have a material
effect on the financial results, the financial position or cash flow of
a public company listed on the Johannesburg Stock Exchange, or any information
pertaining to new developments in its area of activity which is not public
knowledge and which may have an effect on a public companys assets
and liabilities or financial position, is regulated in South Africa.37
In the sphere of
patent law, the disclosure of proprietary information can prevent the
subsequent issuance of letters patent for related inventions.38
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| 12. Encryption | ||||||
|
What follows is
a discussion of the use of encryption, if at all, in the workplace in
order to protect confidential information and trade secrets (or privileged
information in certain instances). Ultimately, employers will have to
decide whether they wish to permit the use of public key encryption in
the workplace and if so, its regulation, if any, in an ECP.
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12.1
What is encryption?
210
Most encryption software programs use algorithms and encryption keys.40 These keys contain a string of zeros and ones of varying lengths. Each character in the string is called a bit. Encryption software combines the message or attachment to be transmitted and the key in a complex mathematical algorithm, resulting in the ciphertext. The longer the bits in the key, the more difficult it is to crack the encryption system without the key. Given the fact
that the Internet is an open network, it is important to remember that
if one is going to send messages which are not encrypted, this would be
the electronic equivalent of sending postcards, as opposed to the equivalent
of sealed envelopes when encryption is used.
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12.2
Types of cryptography
There are two types of cryptography: private key (symmetric) and public (asymmetric) key. In a private key system, the same key is used for encrypting and decrypting the material. In a public key system, two complementary keys are used, one for encrypting and the other for decrypting the message. One is called the private key and the other the public key. The private key is kept secret by the signer and is never shared. The public key is shared with anyone whom the author wants to communicate with. The private key is used to sign a message, or encrypt a message, or both. One must remember that a document can be signed without having been encrypted. If it is not encrypted, confidentiality is lost.
211
A message is signed by the author using his/her private key. To sign a message, the software makes a so-called message digest (also known as a hash value) of the communication. The message digest is a series of numbers and letters unique to each message. If one letter or number is changed in the message, the message digest will also change. The message digest is the digital signature, which is commonly associated with encryption. See further chapter 5. |
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|
It appears as if
encryption software is free to be used by commercial or private organisations
(i.e. one does not need a permit from the relevant government department
to use it). The situation is governed by the Armaments Development and
Production Act.41 This Act must be read
in conjunction with Schedule 1 of the General Armaments Control Schedule.42
In terms of the Schedule, the South African government controls encryption
as a dual-use item. This means that the export of encryption software
requires an individual validated licence. While the Act does not specifically
include encryption software in its definition of armaments,
item 8 of the Schedule places controls on the export of military equipment
that possesses cryptographic capabilities. Hence, a valid permit is required
from the Armaments Control Division for the import of cryptographic equipment
for software.
It
is important for South African users to note that the export of encryption
software is regulated in many countries.43
In the United States, these regulations take the form of export controls.44
The practical effect of this for South African users is that they are
not able to use, for example, PGP (Pretty Good Privacy). However, there
is an international version of PGP (known as PGPi) which is available
for use by South African users.
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12.4
Is a digital signature legal in South Africa?
Unlike certain states in the United States of America and certain countries in the European union,45 South Africa has not yet recognised the need to provide a legal infrastructure to support the use of digital signatures and accordingly, no digital signature legislation exists. When one applies South African common law in an attempt to address the issue of the legality of digital signatures in South Africa, it would, however, appear that certain categories of legal documents are not capable at present of being signed with a digital signature, while there appears to be no legal bar to other categories of documents being validly concluded in this manner. 212
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12.5
Business reasons for using cryptography
The use of encryption, and in particular digital signatures, serves important evidentiary and security purposes. A digital signature serves the same purpose as a hand-written signature in that it may signify authorship, acknowledgement or assent. What sets a digital signature apart from its traditional hand-written counterpart is that an encrypted digital signature is by its very nature not able to be proved by the tried and tested methods employed by handwriting experts, such as pen pressure, slope of characters and the like. The security purposes that a digital signature can, however, achieve are the following:
In the business context, companies have legitimate and compelling reasons for using cryptography. For example, cryptography can secure internal and confidential business communications from accidental loss (e.g. through misdelivery) and from intentional interception (e.g. because of corporate espionage). Likewise, crypto systems are used to protect non-message data, such as business plans, new product design information and employee listings such information may be stored on company computers and media such as CD-ROMs, disks, floppies and tapes. On the other hand, if employees are free to use any encryption technology, the employer may have great difficulty in decoding or decrypting proprietary files that have been scrambled by its employees, unless the employer has the key used to encrypt the files. Without some method of assuring that the encryption keys are held by the employer (or available to it), there is risk that important company proprietary information may be unavailable (if the employee is absent) or unreachable (if the employee has died), or if the employee simply has lost the decryption key (or has forgotten the password used to lock the decryption key).
213
One solution to this problem lies in an approach called key-recovery, or key-escrow. This is a technique whereby a private key would not only be held by the user, but also by the employer. As companies deploy
encryption technologies in their organisations (by making them available
to employees), it is important that they take care to negate any implication
that employees have enhanced privacy expectations (otherwise arising out
of their ability to encrypt files). In part this can be accomplished by
using key recovery technologies still, the prudent
employer will spell out the implications flowing from adoption of such
technologies so that employees are fully aware that the employer can and
may decrypt and read any employee-generated files prepared on the employers
systems.
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| 13. Retention and security of messages | ||||||
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E-mail,
voice-mail messages and items stored on employees computers are
the property of the company. They in all probability will have the same
legal effect as that of traditional hard copy documents (i.e. they are
discoverable in litigation and can be used in evidence). Accordingly,
all e-mail messages should be treated as though they may later be viewed
by others (while confidential information may be contained in such messages,
these messages should be created with the same care that one would use
in creating hard copy documents).
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| 14. Privacy of electronic communications | ||||||
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As a general proposition
it is fair to assume that a court will view e-mail provided by employers
to employees as a tool intended for work-related communications in the
first instance. As such, the employer would generally be presumed to have
the right to access and monitor employee e-mail messages, as long as the
employer does so for legitimate business or related purposes.
Although this proposition appears to be a reasonable departure point, there are nevertheless two inherently conflicting interests in regard to any such communications: in the first instance there is the unarguable legitimate business interests of the employer which require protection and can fairly be said to justify the monitoring of its information systems, while there is simultaneously the competing interest of the employees reasonable expectation of privacy regarding communications made with third parties while in the workplace.
214
The judicial determination of which interest should be given paramount consideration is, however, a vexed one. The questions which arise are moreover not only whether or not such communication may be intercepted legitimately by an employer in breach of the employees reasonable expectations of privacy of communication, but, in the event of it being established that the employer is so entitled to do, the question of the introduction of the evidence so obtained before a tribunal presents a separate set of legal problems. There are certain
pieces of legislation and case law in South Africa which must be considered
in an attempt to provide an answer to the question of which of the two
rights should, in the first instance, enjoy supremacy.
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Section 14(d) of
the Constitution guarantees the right to privacy as a fundamental right,
which includes the right not to have the privacy of their communications
infringed. Had the Constitution contained no further provision regarding
how the rights in the Bill of Rights should operate, it would have been
arguable that the right to privacy of communications was an absolute right
which could never be departed from.
However, section
36 of the Constitution contains a so-called limitations clause
which provides that inroads into the rights as contained in the Bill of
Rights can be made by the enactment of other laws provided that it would
be reasonable and justifiable to do so:
In
S v Makwanyane46 Chaskelson P remarked
that this involved a balancing process which calls for the balancing
of different interests. In the balancing process, the relevant considerations
will include the nature of the right that is limited, and its importance
to an open and democratic society based on freedom and equality; and purpose
for which the right is limited and the importance of that purpose to such
a society; the extent of the limitation, its efficacy, and particularly
where the limitation has to be necessary, whether the desired ends could
reasonably be achieved through other means less damaging to the right
in question.
In
determining an individuals right to claim absolute privacy of communications
in terms of section 14(d) of the Constitution, one must also have regard
to the context in which this right will operate: namely, whether it will
operate between citizen and the state (e.g. a state department or agency
and a citizen) or between citizens (e.g. employer and employee), bearing
in mind that the primary aim of the Bill of Rights is to protect individual
citizens against unacceptable state interference with their fundamental
rights.47
It is
clear from a reading of section 14 that some of the provisions may apply
as between citizens, whereas other provisions in the same section, and
pertaining to the same right, will not. It is also clear from our case
law that whether or not a provision will apply between citizens will depend
on the nature of the private conduct in question as well as the circumstances
of a particular case.
The
Constitutional Court has already made clear the importance of the right
to privacy in the new South Africa.48 In
the Case and Another49 matter, Madala J
recognised that the protection accorded to the right of privacy
is broad but it can also be limited in appropriate circumstances.
In
the Bernstein case (supra), Ackermann J analysed and discussed
the concept of personal privacy and essayed some preliminary observations
on the right to privacy. One of the observations made by Ackermann J is
that the scope of a persons privacy should extend only to those
aspects in regard to which a legitimate expectation of privacy can be
had.
It has been argued by certain academics that this subjective expectation component simply recognises that someone cannot complain about an infringement of privacy if they have consented explicitly or implicitly to having their privacy invaded.50
216
These sentiments were also echoed by Ackermann J, who stated in the Bernstein decision (supra) that privacy is acknowledged in the truly personal realm, but as a person moves into communal relations and activities such as business and social interaction the scope of personal space shrinks accordingly. Although it is
not theoretically sound to speak of contracting out of, or waiving, constitutional
rights and obligations, in the context of employers infringing any rights
to privacy that an employee may have in the workplace, it is clearly vital
for employers to inform employees of, and to obtain their consent to,
the possible monitoring and interception of their electronic communications
in order that they do not have any legitimate expectations in this regard.
Having
regard to the balancing process referred to by Chaskelson P in S v Makwanyane,51
employers would be well advised to act reasonably in formulating
their ECPs, to consider less invasive means of achieving their objectives,
and above all, to obtain the consent of their employees whenever possible
as well as ensuring that they are well informed. Most notably, employers
should formulate their ECP with the view in mind that they have to expressly
address the limits of an employees legitimate expectation to privacy.
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The provisions
of section 14(d) of the Constitution have been circumscribed to some extent
by the coming into being of the Interception and Monitoring Prohibition
Act (the Monitoring Act).52 This Act came
into operation on 1 February 1993,53
and although it was drafted before the adoption of the Interim Constitution,
this was nevertheless done in the knowledge that its validity would be
tested against the provisions of the Constitution and in particular, the
right to privacy contained in the Constitution.
It has been held
by the Durban and Coast Local Division of the High Court that the Monitoring
Act is an Act of general application within the meaning of section 36
of the Constitution and accordingly the provisions of the Monitoring Act
are at present deemed to set out the only legitimate departure from the
fundamental right to privacy as enshrined in the Bill of Rights.54
The Monitoring Act provides for the Minister of Justice to designate power to a judge in a Local or Provincial Division of the High Court to consider applications for interception and monitoring of a communication which has been or is being or is intended to be transmitted by telephone or in any other manner over a telecommunications line.55 In practice, however, only one judge has been appointed for all the divisions and all applications for interception and monitoring are being considered by that judge.
217
To date there are no reported cases concerning whether or not e-mail communications would fall within the definition of a communication as contemplated by section 2(1)(a) of the Monitoring Act. The analysis of what types of communication would fall within the ambit of one to be transmitted by telephone or in any other manner over a telecommunications line was very superficially analysed by Heher J (as he then was) in the Protea56 case, and in particular, the issue of whether or not e-mail communications would be deemed to fall within the ambit of section 2(1)(a) was not even discussed in this case. The transmission of e-mail between two distant personal computers by using modems, a telephone line and a communications program in each computer would appear, subject to the necessary technical proof being provided to the satisfaction of the court, to be relatively easily capable of being brought within the meaning of the words to be transmitted by telephone. Not all e-mail
communications are, however, transmitted in this manner. For example,
e-mail can be transferred between two local computers by coupling them
together with cable and a file transfer program in each computer, or between
personal computers which are part of a local area network.
Where these forms of transmission occur, it is a question of whether or not they are nevertheless transmitted over a telecommunications line. The definition of telecommunications line in section 1 of the Act is very wide and reads as follows: While the inclusion
of e-mail in the definition is accordingly a moot point in our law, it
is likely that the technical requirements for the transmission of e-mail
are such that e-mail will be deemed to be a communication within the meaning
of the Monitoring Act.
Furthermore, there is no differentiation in terms of this Act regarding matters of national security and applications relating to crime investigation on the one hand, or monitoring and interception required for private purposes on the other. 218
The Monitoring Act therefore effectively prohibits the interception of a communication which has been or is intended to be transmitted by telephone, or in any other manner over a telecommunication line, where such interception occurs intentionally and without the knowledge and permission of the dispatcher. It furthermore prohibits the intentional monitoring of a conversation or communication by means of a monitoring device so as to gather confidential information concerning any person.57 It must be remembered,
however, that a distinction needs to be drawn between the right of privacy
of a private citizen to interception or monitoring by state authorities
on the one hand and the monitoring of communications on internal telephones
in a workplace on the other hand. It would appear that in view of the
Protea case58 it is arguable that
the principle has been accepted in the case of businesses that communications
on internal telephones may be monitored and indeed sanctioned, without
there necessarily being an invasion of the individuals rights of
privacy.
In the Protea
case the court made the important finding that the effect of the Monitoring
Act was not to remove a courts discretion to admit evidence obtained
in contravention of the Act. It held further that with regard to the admissibility
of evidence, the Act should furthermore not be interpreted so that grave
injustice might result. It concluded further that the Act did not render
the production of recordings made in contravention of its provisions inadmissible
before a court trying a civil dispute.
In
November 1998 the South African Law Commission in its Discussion Paper
78 undertook a review of the Monitoring Act59
and made certain recommendations concerning the Act, inter alia, that
section 2 of the Act should be amended to provide that no person shall
intentionally monitor a conversation or communication without the knowledge
or permission of the parties to such conversation or communication.
This recommendation
would have the effect of addressing an employers concern regarding
the monitoring and interception of employees communications to some
extent. This is the more so where it can be argued by the employer that
the employee has been given fair warning (e.g. in the ECP) of the possibility
of monitoring and interception of communications and where indeed a company
policy document has stated clearly that the company reserves its right
to do so. The employees acquiescence to such term, whether express
or implied, would then effectively render an argument far more compelling
that such monitoring and interception is legal.
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14.3
Contractual limitations to privacy rights
A fundamental premise of our law is that individuals should be allowed to contract freely, without interference by the court, provided only that the terms of such contract are not deemed to be contra bonos mores or against public policy. It may well be argued that the sanctity of contract is a fundamental principle of our law which should enjoy predominance even over fundamental rights as contained in the Constitution. The only stumbling block to the acceptance by our courts of this proposition may be that if individuals are allowed to abrogate the very pillars of the Constitution as contained in the Bill of Rights, this must, as a matter of course, be deemed to be against public policy and contractual terms should accordingly not enjoy supremacy over constitutional norms. Jurisprudential arguments aside, however, there would appear to be nothing unacceptable in principle to parties agreeing in terms of the provisions of an employment contract that an employees rights of privacy regarding communications made while in the workplace and on the employers time, should be susceptible to interception and monitoring by the employer in the ordinary course of conduct of its business.
220
While in the ordinary course agreement can be reached either expressly or implied, given that the right to privacy is guarded so jealously as a fundamental right, it would be fair to assume that a court will require an individual to expressly and unequivocally waive the right to privacy before such waiver will be deemed to have occurred. |
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Given the absence
of clear authority in South Africa concerning the interception, monitoring
and use of electronic communications of employees in the workplace, it
is necessary to examine the position in other jurisdictions in an attempt
to formulate potentially persuasive arguments which could be used to good
effect in South Africa.
Arguably the country
in the world which not only generates more litigation than any other,
but which is also superior in the area of the use of computers, is the
United States of America. It too has a constitution which enshrines the
right to privacy.
It is accordingly
useful to investigate how the issue of the privacy of electronic communications
has been approached and applied in the courts of the United States.
In
the United States of America the Electronic Communications Privacy Act60
(ECPA hereafter) is currently the only federal statute that addresses
the privacy of electronic communications such as e-mail, voice-mail, fax
and cellular phone communications. This Act generally prohibits anyone,
other than the sender and the intended recipient of the message, from
intercepting an electronic communication or accessing a stored electronic
communication or disclosing the contents of an electronic communication.
This Act also applies to both government and private citizens and provides
for certain penalties (both criminal and civil) for its breach.
221
Although the ECPA prohibits interception of e-mail messages during the communications process, two exceptions appear to authorise employer monitoring of employee e-mail messages. These two exceptions are commonly known as the prior-consent exception and the business-use exception. Under these two exceptions, the ECPA provides private employers considerable, indeed almost unlimited, latitude in monitoring the electronic communications of their employees. Under the prior-consent
exception it is not unlawful to intercept electronic communications when
one of the parties to the communication has given prior consent to the
interception. Thus, if employees give their consent to employer monitoring,
there is no question that the monitoring is lawful. This consent may take
many forms, including an employees signature on an e-mail policy
statement that notifies the employee that all e-mail communications may
be subject to monitoring. Implied consent is also possible, depending
on the circumstances of each case. Implied consent can be derived from
a situation where employees have been informed that solicitation calls
will be monitored as part of the companys regular security programme.
Similarly, when
an employee knows that personal calls on monitored phone lines are not
permitted, it has been accepted that the employee has no reasonable expectation
that such calls will be protected from an employers intrusion. In
the online context, implied consent may occur when an on-screen message
appears each time that the employee uses the companys system. This
message warns that there is no guarantee of privacy in e-mail messages
and conditions the use of the companys system on exceptions of this
policy. It is, however, more difficult to imply consent than it is to
prove that express consent has been obtained from the employee.
Even where employees have not consented, the business-use exception will normally allow the employer to intercept and monitor employees e-mail activities. Under the provision of the ECPA, the entity that provides the electronic communications service through which the messages flow is ordinarily authorised to intercept messages. This gives the provider of the e-mail system in the workplace great latitude in monitoring company-owned electronic communication systems, including e-mail and voice-mail. The business-use exception of the ECPA does not limit the message or degree of employee monitoring, nor does it require employers to provide employees with notice. It does, however, require that the employers monitoring be within the ordinary course of its business and that the subject matter of the intercepted communication is one in which the employer has a legal interest.
222
The more limited in purpose and time the interception or listening-in takes place for, and the more business orientated the intercepted communication is, the more likely it is that a court in the United States will allow the use of such intercepted messages by the employer. Another aspect
of the ECPA provisions in the United States is that even when an employer
does not have a right to intercept a message in transit, it may have a
right to access and review a stored message residing on its
system. In most cases, employer monitoring of e-mail messages will probably
involve access to stored communications which reside on the system, rather
than the interception of communications in transit. The ECPA
provides an even broader exception for employers in regard to access to
stored communications: specifically, the electronic communication service
provider is exempt from the statutes ordinary prohibitions. This
clearly has a major implication for e-mail messages that are stored on
the employers system.
The Monitoring
Act in South Africa does not appear to cater as widely as the American
ECPA Act does for the categories of exclusion, although the latest recommendations
from the Law Commission certainly appear to be moving in the direction
of allowing the legal interception of messages where prior consent has
been obtained. Specific categories of exclusion such as those discussed
above do not appear in the draft Bill which the Law Commission has, however,
proposed to date for South Africa.
The
rule of thumb in the United States appears to be that where an employer
has a written e-mail policy warning of possible interception, the employers
chances of warding off invasion of privacy suits is increased significantly.
Such a policy would minimise the employees reasonable expectation
of privacy. If one uses the American legal system as a guideline in this
regard it is significant to note that even in states such as California,
which has among the strictest state privacy laws in force (privacy laws
that are widely regarded as being even stricter than those contained in
the Fourth Amendment of the United States Constitution), employees have
unsuccessfully sued employers for breach of their rights of privacy where
written e-mail communication policies have removed the legitimate expectation
of privacy regarding e-mail communications.
In what is commonly
regarded as the leading American case on the issue of 223 |
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14.5
Conclusions regarding usability
Regarding the usability of intercepted computer-generated e-mail evidence, it would appear in the light of the above that:
224
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It is a broad principle of South African law that the dismissal of an employee is only justified if that employees misconduct leads to the irretrievable breakdown of the relationship between the employer and the employee. If the employer is seeking to discipline the employee on grounds that he/she has broken one of the rules set forth in the ECP, then it is incumbent on the employer to establish three things:
225 If the employer is able to establish these three requirements, one would proceed to the next step of the inquiry, namely to establish whether or not the particular rule has been breached. If it has, then there has been misconduct. Once misconduct has been established, one would then move to the next step of the inquiry, which would be to ascertain whether or not the misconduct justifies dismissal. In evaluating whether or not dismissal is justified, one must establish two things:
In all instances,
the employer must convene a disciplinary inquiry in order to enable the
employee to respond to the allegations of misconduct which have been levied.
It is therefore
very important not only to have a well-formulated ECP, but for the terms
and conditions of the ECP to be pertinently brought to the attention of
the employee.
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Few companies at
present have an ECP in place. Of those who do, it is questionable how
many comprehensively address the many problem areas that employers face.
In certain instances, this may be due to a failure on the part of the
employer to appreciate the full extent of the potential problems that
may arise from inappropriate and unmonitored use of e-mail and Internet
facilities provided to employees. The drafting of appropriate ECPs is
moreover one that requires an intimate knowledge of the companys
internal requirements, operating procedures and policies, as well as an
extensive knowledge of both domestic and foreign law. Failure to provide
an ECP leaves the company sitting on a potential litigation time bomb.
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226
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