OTTAWA — CSIS has recruited some Defence Department wizardry to sidestep legal limits on its ability to spy on Canadians travelling abroad. Details of a Federal Court ruling released Tuesday provide a glimpse of the high-tech tools used by spies in the fight against terrorism and espionage. The reasons for a potentially groundbreaking decision by Justice Richard Mosley reveal the Canadian Security Intelligence Service obtained a warrant to monitor two suspects considered threats to Canada late last year. When it got wind the pair were leaving the country, CSIS won court approval to employ the secretive Communications Security Establishment, a wing of National Defence, to ensure the interceptions could continue.

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