Computer security(1): Introduction to computer secuirty

Computer Security

Confidentiality:
1.A loss of confidentiality is the unauthorized disclosure of information.
2.Confidentiality ensures that only authorized parties can view the information.

Integrity:
A loss of integrity is the unauthorized modification or destruction of information.

Availability:
1.A loss of availability is the disruption of access to or use of information or aninformation system.
2.Information can not be“locked up” so tight that no one can access it;otherwise,the information would not be useful.

The realtionship of security concept

Three types of attack

Security Design Principles

Attack suface