In affiliate marketing, a third-party website places ads for the product on their website. When users click on the ad and make a purchase, the third-party website earns a commission for that purchase. They can also earn a commission if the user closes that website after that redirect and makes a purchase later using the same browser. Whenever a user is redirected from an ad to the product website, it drops a cookie on the user’s browser, giving the affiliate marketer credit for the traffic (Figure 3). While affiliate marketing is a legitimate concept, cookie-stuffing is a process where these fake ad blockers redirect users to the website to drop cookies without the user’s knowledge to generate revenue for the extension developer.