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my mozillla have been hijack by ADs malware, how to clean it? i try to uninstall and install again, reset to factory, disable the addon,but it's not work anyway

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i really dont understand how to clean my mozilla, when i open a site, after a while it open the ADs TAB..

i have try to uninstall and install again, reset to factory, disable the add-ons, cleaning with some of best malware clean like spyhunter4 and adwcleaner.. but it's not work anyway, these ADs  is annoying!
i really dont understand how to clean my mozilla, when i open a site, after a while it open the ADs TAB.. i have try to uninstall and install again, reset to factory, disable the add-ons, cleaning with some of best malware clean like spyhunter4 and adwcleaner.. but it's not work anyway, these ADs is annoying!

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You can try these free programs to scan for malware, which work with your existing antivirus software:

Microsoft Security Essentials is a good permanent antivirus for Windows 7/Vista/XP if you don't already have one. Windows 8 has antivirus built-in already.

Further information can be found in the Troubleshoot Firefox issues caused by malware article.

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