This probably does not help although I was gaming around the time of this, the game was Garry's Mod, Borderlands 2 and Minecraft.

Hi EthanShanks

try with a few malware/virus scan programs. You need to use all programs because each detects different malware. Make sure to update each program to get the latest version before doing a scan.

http://housecall.trendmicro.com/ - Trendmicro online

http://www.malwarebytes.org/mbam.php - Malwarebytes' Anti-Malware

http://www.superantispyware.com/ - SuperAntispyware

http://www.safer-networking.org/en/index.html - Spybot Search & Destroy

http://www.lavasoft.com/products/ad_aware_free.php - Ad-Aware Free

check also for a rootkit infection with TDSSKiller.

http://support.kaspersky.com/viruses/solutions?qid=208280684

thank you

Yes I understand so although I have Windows Protection and AVG 2013 Protection and I've never came across such a thing!

You can also try to delete the sessionstore.js file and possible sessionstore-##.js files with a number and sessionstore.bak in the Firefox Profile Folder.

• http://kb.mozillazine.org/Profile_folder_-_Firefox
• Help > Troubleshooting Information > Profile Directory: Open Containing Folder

Deleting sessionstore.js will cause App Tabs and Tab Groups and open and closed (undo) tabs to get lost, so you will have to create them again (make a note or bookmark them).

• http://kb.mozillazine.org/Multiple_profile_files_created

You can also try to clear saved data in Firefox.

• https://support.mozilla.org/kb/Clear+Recent+History

Yes, this was helpful but I would also like to know what caused it and how/why they did it!