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 計算機安全學中,安全人員在工作間內巡邏,特別是在正常工作時間以外的時間里檢查入侵者、終端的非法使用及其它安全違章行為。