counter-intelligence
noun /ˌkaʊntər ɪnˈtelɪdʒəns/
/ˌkaʊntər ɪnˈtelɪdʒəns/
[uncountable]- secret action taken by a country to prevent an enemy country from finding out its secrets, for example by giving them false information; the department of a government, etc. that is responsible for this
反情报秘密行动;反情报政府部门