Security Principles(计算机安全原理）

1. Basic Knowledge

1. Keep the computer systems work as intended

让计算机系统做想做的事情

2. Protect the data and computing resources from unauthorized use

防止未授权的使用

Security Principles 无法保证不收到攻击。

3. There is often a tradeoff between the cost of security and the level of security of a security mechanism