Thank you for your question.
In the case where we have acquired foreign intelligence intercepts that contain information about a Canadian that is germane and that does indicate that there's a threat vector to Canada, or that there are reasonable grounds to believe that it could be related to a threat, we keep that information. We do not destroy it.
I understand that, over time, patterns may build up, but those are the rules that we have. In the interest of protecting the privacy of Canadians, if at the time of review we determine there's no link or that it is not germane to the foreign intelligence, to a threat to Canada, then we destroy it.