counterintelligence

名词 counterintelligence:

1. intelligence activities concerned with identifying and counteracting the threat to security posed by hostile intelligence organizations or by individuals engaged in espionage or sabotage or subversion or terrorism

coun.ter.in.tel.li.gence

n.（名词）
The branch of an intelligence service charged with keeping sensitive information from an enemy, deceiving that enemy, preventing subversion and sabotage, and collecting political and military information.
反情报组织：情报组织的一个分支，任务是使敌人得不到高级机密，欺骗敌人，避免颠覆和阴谋破坏并收集政治和军事情况