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In the not-too-distant past, encryption in malware was a sign of an ambitious effort on the part of the program's author. Today, nearly all malware uses some encryption, and perhaps two-thirds of botnets use encrypted communications to obfuscate their activities, says Jeff Edwards, a research analyst with network security firm Arbor Networks.
Expert analysis finds the bad guys increasingly use stronger encryption to protect their malware and botnets.
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