Communications Security Establishment Canada | Centre de la sécurité des télécommunications Canada Email Format

Government AdministrationOntario, Canada201-500 Employees

The Communications Security Establishment Canada (CSE) is a federal government agency in Ottawa, Ontario, focused on national security and intelligence. It provides foreign signals intelligence and delivers advanced cybersecurity services to protect Canada's most important information and systems. Within the government administration landscape, it collaborates with partners to address evolving cyber threats.

Its primary customers are the Canadian government and other critical national infrastructure that rely on secure information and systems. The agency is a federal operation with several hundred employees. A recent development illustrating ongoing threat intelligence work is an April 2026 joint Cybersecurity Advisory issued with international partners to warn network defenders about cyber threats.

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