CSIS' Mandate, Duties and Functions


CSIS collects information and intelligence on activities suspected of constituting threats to the security of Canada and advises the Government of Canada (GC). CSIS also supports other GC departments and agencies through security screening and foreign intelligence collection.

Review and oversight

All CSIS activities are subject to review by the National Security and Intelligence Committee of Parliamentarians. The Intelligence Commissioner provides oversight by examining and approving certain decisions of the Minister, including the classes of Canadian datasets that CSIS can collect and classes of otherwise illegal activity pursuant to the justification framework.

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