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S5Mark is a ‘VPN’ that is actually a rootkit in disguise, BitDefender says

The best defense, as always, is constant vigilance against what you're downloading, and from where.
s5mark ui
Bitdefender

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As PCWorld's senior editor, Mark focuses on Microsoft news and chip technology, among other beats. He has formerly written for PCMag, BYTE, Slashdot, eWEEK, and ReadWrite.

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