On the menu bar, on top of Firefox, go to Help < Report Web Forgery to report those links. [http://www.mozilla.com/en-US/firefox/phishing-protection Click here] to learn more about phishing protection in Firefox. That last link you posted is a fake website that attempts to install [http://en.wikipedia.org/wiki/Rogue_security_software Rogue security software]. [http://www.f-secure.com/weblog/archives/00001997.html Here is] an article about it. Mozilla is aware of this. I will need to remove that link to prevent users from getting malware. You should update and run a scan with a program such as [http://www.malwarebytes.org Malwarebytes free version] just to be safe.