Services and information

The Communications Security Establishment is Canada’s agency responsible for foreign signals intelligence, cyber operations, and cyber security.

We gather foreign signals intelligence to defend Canada’s national security. We keep the Government of Canada’s information secure. We work with industry and academia to protect Canadians from cyber threats.

Cyber security

Learn about CSE’s cyber security activities

Foreign intelligence

Learn about CSE’s foreign signals intelligence activities

Cyber operations

Learn about CSE’s foreign cyber operations

Assistance to federal partners

Learn about CSE’s role in assisting federal defence partners

Research at CSE

Learn about research taking place at CSE



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Read how we are held accountable to Canadians

Culture and community

Culture and community

Learn how we support our employees and our community

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