There was a scandal not too long ago connected to Brave browser. They were appending their own referral codes to urls without their users knowing, which is rather unethical, if not outright criminal in many countries. When a user entered the name or url of certain cryptocurrency sites into Brave, it would automatically redirect them to that site with Brave’s referral code appended to the url. Would you use a browser like this without having second thoughts? They admitted it and apologized saying, it was an unintentional mistake. Mistake my ass, it was done intentionally.