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Linux backdoor squirts code into SSH to keep its badness buried

Nov 15, 2013, 23:00 (0 Talkback[s])

Security researchers have discovered a Linux backdoor that uses a covert communication protocol to disguise its presence on compromised systems.

The malware ‪was used in an attack on a large (unnamed) hosting provider ‬back in May. It cleverly attempted to avoid setting off any alarm bells by injecting its own communications into legitimate traffic, specifically SSH chatter. SSH is a protocol commonly used to access shell accounts on Unix-like operating systems, a continuous activity for remote administration of websites.

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