Mozilla does not offer any "security" programs. There is '''no Firefox virus protection''' - that is a scam to scare you into installing a malicious program on your PC. 1. If you installed anything from that page, you need to run a full scan with your Anti-virus application - i.e., Norton, McAfee, Avast, or whatever you have installed, to make sure you didn't have a virus installed from that program. 2. You should also run scans for Malware, too, using a number of different programs. <br /> Install, update, and run these programs in this order. They are listed in order of efficacy.<br />'''''(Not all programs detect the same Malware, so you may need to run them all to solve your problem.)''''' <br />These programs are all free for personal use, but some have limited functionality in the "free mode" - but those are features you really don't need to find and remove the problem that you have.<br /> ''Note: If a Malware infection is bad enough and you are mis-directed to URL's other than what is posted, you may have to use a different PC to download these programs and use a USB stick to transfer them to the afflicted PC.'' Malwarebytes' Anti-Malware - [http://www.malwarebytes.org/mbam.php] <br /> SuperAntispyware - [http://www.superantispyware.com/] <br /> AdAware - [http://www.lavasoftusa.com/software/adaware/] <br /> Spybot Search & Destroy - [http://www.safer-networking.org/en/index.html] <br /> Windows Defender: Home Page - [http://www.microsoft.com/windows/products/winfamily/defender/default.mspx]<br />