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introduction lesson

SEC1202 - Chapter 1

Introduction to Computer Security

Core: CIA Triad, Passive vs. Active Attacks, Security Services (X.800), Network Security Models.

The Philosophy of Defense

Security is not simple. It requires balancing three elements: Space (memory), Time (computation speed), and Strength (mathematical resilience).

Interactive CIA Triad Explorer

Confidentiality

Definition:

Preserving authorized restrictions on information access and disclosure.

Real-world Example: Student Grades: Only the student and registrar should see them.
Impact of Failure: Loss of Confidentiality: Unauthorized disclosure of information.

Low Impact

Minor degradation of mission; minor damage to assets or individuals.

Moderate Impact

Significant degradation; significant damage; or significant harm (no loss of life).

High Impact

Catastrophic degradation (loss of mission); major damage; severe harm or loss of life.

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