On Feb. 15, a Telegram account called @truckersforfreedomglobal posted an update to its nearly 100,000 followers. “Governments are after unvaccinated people, following them on social media and coming to their doors. What it is to be done? [sic]” The answer: “use a VPN,” which makes it “much harder for authorities to hack you.” The author included an affiliate link for a virtual private network company, which pays a commission to the promoter for each click. The post was part of a flurry of online activity surrounding the trucker convoys earlier this year, which shut down central Ottawa for weeks. Its...