How to stop Firefox from going to false sites on its own?
When I go to my Windows 7 desktop, I sometimes find that my browser has launched and is asking me to check or download something suspicious. I ran full Norton 360 scans, have run Norton Power Eraser, including the "Unwanted Application Scan" and found nothing. I downloaded and ran Revo Uninstaller, but didn't see anything suspicious. I have screen shots, but don't see how to include them.
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Check your Tools > Add-ons and remove any suspicious extensions. If you can't find anything, try these free programs to scan for malware, which work with your existing antivirus software:
- MalwareBytes' Anti-Malware
- AdwCleaner (for more info, see this alternate AdwCleaner download page)
- Anti-Rootkit Utility - TDSSKiller
- Microsoft Safety Scanner
- Hitman Pro
- ESET Online Scanner
Further information can be found in the Troubleshoot Firefox issues caused by malware article.
Start a scan with MalwareBytes. Sometimes malware can sneak in and prevent your anti-virus from working properly, so its a good idea to run a scan with another tool in addition to your antivirus every now and then as different tools can catch different types of infection.