As sagethesagesage said [1], you're protecting the user from having their browser pass the user's data from your site to a malicious site. The attacker shouldn

As sagethesagesage said [1], you're protecting the user from having their browser pass the user's data from your site to a malicious site. The attacker shouldn't be able to make the user run an old, vulnerable browser. [1] https://news.ycombinator.com/item?id=14282532 https://news.ycombinator.com/item?id=14282532