In computer security,measures required to protect against unauthorized(accidental or intentional) disclosure,modification or destruction of ADP systems and data,and denial of service to process data.

• 计算机安全学中用于防护未授权（偶然的或蓄意的）的泄露、修改或销毁自动数据处理系统及数据以及拒绝处理数据的方法。