New Reddit security measure?

Whenever I open Reddit on the web (not mobile and browse it, open threads, comment sections, whatever, this pops up. It happens everywhere, in both the US and the EU. As far as I've tested. Different antidetect browser profiles too. Any suggestions. This has never happened before.

P.S. You cannot remove the pop-up; no X or anything. You have to restart your page, but it comes back pretty fast

Solved: