Communications Security Establishment (CSE)

CSE is Canada's national cryptologic agency. Unique within Canada's security and intelligence community, CSE employs code-makers and code-breakers to provide the Government of Canada with information technology security (IT Security) and foreign signals intelligence (SIGINT) services. CSE also provides technical and operational assistance to federal law enforcement and security agencies.

CSE has internationally recognized cyber and technical expertise which enables us to respond to threats and attacks against government computer networks and systems, and the important information they contain.

We help protect our systems from foreign states, hackers, and criminals. We track threats from around the world, we monitor government networks to detect cyber threats, and we work with government departments to defend and strengthen systems that have been compromised. We help protect information of value to the government, including personal information, from theft.