If you google eg “Montreal” and “Vancouver”, you will find accusations against specific locations there as well. The fact that nothing has been reported for Waterloo is not, in my mind, reassuring. We have a huge population of Chinese nationals (as well as Canadians of Chinese descent) in Waterloo, and very little security [or investigative journalism]. It is hard to believe there would not be agents operating full time in Waterloo, even if they don’t have a dedicated office here.