I think it may be google. When you search for something on FR, every search result comes up with “This site may harm your computer”.
Google has a web page with instructions on how to fix this, but the site administrator needs to do it:
https://support.google.com/websearch/answer/45449?hl=en&rd=1
Remove the message from your site
The “This site may harm your computer” notice won’t be removed until the webmaster of the site takes action.
Try these steps to fix the issue if the message is showing on your site:
“I think it may be google.”
I got a page that said that a group called “Stop Badware” supplies a blacklist to Google and Firefox. This is politically motivated.