About CSE

The Communications Security Establishment (CSE) is Canada’s centre of excellence for cyber operations. As one of Canada’s key security and intelligence organizations, CSE protects the computer networks and information of greatest importance to Canada and collects foreign signals intelligence. CSE also provides assistance to federal law enforcement and security organizations in their legally authorized activities, when they may need CSE’s unique technical capabilities.

CSE protects computer networks and electronic information of importance to the Government of Canada, helping to thwart state-sponsored or criminal cyber threat activity on our systems. In addition, CSE’s foreign signals intelligence work supports government decision-making in the fields of national security and foreign policy, providing a better understanding of global events and crises and helping to further Canada’s national interests in the world.

As a result, CSE plays an integral role in helping to protect Canada and Canadians against foreign-based terrorism, foreign espionage, cyber threat activity, kidnappings of Canadians abroad, attacks on our embassies, and other serious threats with a significant foreign element, helping to ensure our nation’s security, stability, and prosperity.

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