Former CBC News senior correspondant Brian Stewart takes an inside look at CSIS.

As the G8/G20 meetings approach in Huntsville, Ont., and Toronto, Stewart's report gives Canadians a good look at an agency that has attempted to keep a low profile while working to keep the country safe.

Boasting a staff of 3,000, the spy agency was created in 1984, taking over from a job previously done by the RCMP.

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