I had an issue today while on the Geocaching.com website where I started getting a lot of virus warnings continually popping up on the webpage. This continued to happen even after I left the website and quit Firefox then reopened Firefox to its homepage. I ultimately had to uninstall Firefox the reinstall it to get out of this problem. I am using Windows 11 (with current updates) and at the time, Firefox was also current in its updates. Running Windows Defender didn't resolve the issue. I finally got the settings for my browser back to where they were before all of this happened except now I have this annoying Customize Homepage button on the bottom right side of the homepage which I can not get rid of. For me, this may be a deal breaker. I am also using DuckDuckGo fo my search engine.