негласный сотрудник разведывательных или контрразведывательных органов(a member of the undeclared establishment, whose connections with the intelligence or counter-intelligence agencies is concealed from people close to him, as his operational activity involves carrying out special measures which require strict security. Most members of the surveillance service, of technical operations and certain other sections of the intelligence or counter-intelligence agencies are members of the undeclared establishment Alex_Odeychuk)
