Last night I went on a friends twitter page and the "malicious web site blocked" popped up. Today I went on a different friends page and the same thing popped up. I have been to these pages numerous times, including earlier today and this page didnt pop up at all. These pages are on my bookmarks and the addresses have not changed. Is this a false poitive?
Twitter is supposedly a clean site but this keeps popping up. I'm getting worried
Here is the image