Security Service

Security Service or security service may refer to:

Government

• Security agency, a nation's institution for intelligence gathering
  • List of security agencies (MI5, NSA, KGB, etc.)
• MI5, also called the Security Service, the United Kingdom's counter-intelligence and security agency
• U.S. Air Force Security Service, a former designation of the United States Air Force Intelligence, Surveillance and Reconnaissance Agency
• RCMP Security Service, the Royal Canadian Mounted Police's political intelligence branch, replaced by Canadian Security Intelligence Service in the 1980s
• Swedish Security Service, the security service of Sweden, belonging to the Swedish National Police Board
• Secret service, a government agency, or the activities of a government agency, concerned with the gathering of intelligence data
• Secret police, a police agency which operates in secrecy and beyond the law to protect the political power of an individual dictator or an authoritarian political regime

Other

• Security service (telecommunication), security architecture for the interconnection of open systems
• Security (finance), a fungible, negotiable financial instrument representing financial value
• Private security company, private security contractors
• Private military company, private military contractors