The US government agency tasked with gathering intelligence for the country's government and military leaders, and preventing foreign adversaries from gaining access to classified national securi [..]

Communication Security Establishment is Canada's national cryptologic agency. CSE was formally established, by an Order­in­Council, in 1946 as the Communications Branch, National Research Council [..]

The UK government's communications­focussed intelligence agency, employing about 5,000 people.

An Australian government intelligence agency responsible for signals intelligence and information security, established in 1947.

The foreign intelligence agency of Germany, established in 1956.

New Zealand national intelligence service, established in 1977.

The security partnership between the U.S., Canada, UK, Australia and New Zealand intelligence agencies.

A division of the NSA responsible for overseeing programmes that source their data through "partnerships" with US and overseas-based companies.

A division of the NSA, which the agency says is "centred on computer network exploitation".

A division of the CSE, Covert Network Threats mission is "to produce intelligence on the capabilities, intentions, and activities of Hostile Intelligence Services to support Counterintelligence a [..]