There are several different ways that Russian disinformation enters into Canada's information space. One of the primary methods is through RT, which is a Russian state-owned news channel that's been broadcasting since 2005. It broadcasts what you could call news, but the vast majority of it is in fact Russian state propaganda aimed at advancing its interests. There are other state media channels that are pushing this same sort of information into Canada.
There's also a system of proxy websites, fake news websites, websites that promote conspiracy theories and such, many of which have been identified in reports that I've produced at DisinfoWatch. The State Department has also produced them. One of them is the platform called Global Research, which was identified by the State Department last year.
All of these platforms have been active over the past two years, promoting COVID conspiracy theories, vaccine hesitancy and such, and they have sometimes been picked up by mainstream media and extremist media in their efforts to push them to Canadians. It's primarily Russian state media that promotes these narratives.