Page 26 - DCAP516_COMPUTER_SECURITY

Computer Security

Notes There are various types of security policies relating to information security such as:
Military security policy (also called a governmental security policy) is a security
policy developed primarily to provide confidentiality.

Commercial security policy is a security policy developed primarily to provide
integrity.

Confidentiality policy is a security policy dealing only with confidentiality.
Integrity policy is a security policy dealing only with integrity.

2.7 Keywords

Confidentiality: Confidentiality is the term used to prevent the disclosure of information to
unauthorized individuals or systems.
CSMA/CA: Carrier Sense Multiple Access/Collision Avoidance, a network contention protocol
that listens to a network in order to avoid collisions.

Information Security: Information security means protecting information and information
systems from unauthorized access, use, disclosure, disruption, modification, perusal, inspection,
recording or destruction

Integrity: In information security, integrity means that data cannot be modified undetectably.

2.8 Review Questions

1. What do understand by the term information security?
2. What do you mean by “confidentiality”? Explain using a real life example.

3. What does “integrity” mean in information security? Give an example to explain its
importance.
4. What do you understand by the term: Availability in information security? Also explain
its importance.
5. Explain the difference between three terms information security, computer security and
information assurance.

Answers: Self Assessment

1. Policies 2. stated
3. attorney 4. enforceable
5. False 6. True
7. False 8. True

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