The ISO 17799 Glossary of Information Security Terms and Phrases

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CERT
The Computer Emergency Response Team (CERT) is generally recognised as the internet's official emergency team.

CERTIFICATION AUTHORITY (Chapter 10)
A trusted third party 'clearing house' that issues digital signatures and digital certificates.

CIPHER (Chapter 10)
A cipher is the generic term used to describe a means of encrypting data or information.

CLEAR DESK POLICY
The policy of an organisation which instructs personnel to clear their desks at the end of each day.

COMPUTER VIRUS (Chapter 8)
Computer Viruses comprise programming code which is purposely written to inflict an unexpected result upon third party.

CIA
Confidentiality, Integrity and Availability (CIA) are often considered to be the three basics of information security.

CONTINGENCY PLANNING (Chapter 11)
Contingency planning is the process of planning for the unexpected or perhaps the possibility of circumstances changing.

COPY PROTECTION
These term is commonly used to describe techniques used by software developers to help prevent illegal use of products.

CRACKER
A cracker is either a person who attempts to gain unauthorised access to a computer system., or a program used to 'crack' some code (to reveal perhaps a password).

CYBERCRIME
This is an activity which uses network access to commit a criminal act.