A recently detected scareware runs browser-based security scanning that shows bogus malware activity on the system, in an effort to deceive users into purchasing fake security products. Dubbed Defru by Microsoft (detected as Win32/Defru), notable about it is the fact that it has the ability to modify the hosts file on the affected computer in order to manipulate web navigation. The result is blocking access to more than 300 legitimate websites, according to Daniel Chipiristeanu from Microsoft…
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