Thousands Linux and FreeBSD Servers Infected with Mumblehard Spamming Malware

The sophisticated Mumblehard spamming malware infects thousands of Linux and FreeBSD servers going under the radar for at least five years.

In the last seven months, several thousand Linux and FreeBSD machines have been infected with a sophisticated malware dubbed Mumblehard. The infected machines were part of a botnet used, in the last five years, to run spam campaign, a version of the Mumblehard malware was uploaded to the VirusTotal online malware checking service in 2009.

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