In computer security, the use of security personnel to patrol work areas, particularly outside normal working hours, to detect intruders and unauthorized use of terminals, to check for security violations.

• 计算机安全学中，安全人员在工作间内巡逻，特别是在正常工作时间以外的时间里检查入侵者、终端的非法使用及其它安全违章行为。