Win32:Sirefef-ZT [trj] is a malicious program which are designed by hackers, basically to steal your confidential data. As its name implies this nasty infection belongs to the most devastating Trojan family. Once installed, it will copy itself to the start up code in order to get reinstalled whenever you login your Windows based system. In fact, it changes your security settings as well as disable your firewall. Win32:Sirefef-ZT [trj] will automatically download other malware without your confirmation in order to corrupt your system. It is advised to use automatic removal tool for the complete removal of this nasty infection.
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