National security
Keeping Canadians safe through counter-terrorism, security screening and protecting critical infrastructure.
Services and information
Counter-terrorism
Canada’s efforts to counter global and domestic terrorist threats, and promote national peace and security.
Critical infrastructure
How Canada strengthens its essential services through programs and partnerships.
Security threat
Read about the threat of terrorism, espionage, foreign interference, and weapons of mass destruction.
Counter proliferation
How Canada and its partners work to counter the increase of chemical, biological, radiological and nuclear weapons.
Security screening
Security screening programs for individuals and businesses.
Cyber security
Potential risks of your online activities and how to stay safe when you are connected.
Canada’s national terrorism threat levels
Learn about the terrorism threat levels in Canada and how they help keep Canadians safe.
What we are doing
Consultations
Laws and regulations
Publications
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