Fysbis (or Linux.BackDoor.Fysbis) is a new malware family that targets Linux machines, on which it sets up a backdoor that allows the malware's author to spy on victims and carry out further attacks.
First signs of Fysbis appeared in November 2014, but only recently have security researchers from Palo Alto Network managed to understand how this threat works and who's behind it.
Based on a lengthy investigation, researchers speculate that this is not your run-of-the-mill malware that infects computers for the criminals' monetary gain (adware, banking operations, Bitcoin mining), but a much more sophisticated threat, which is only used in cyber-espionage campaigns.
Basically, if you're a regular Linux user who likes to play games on Steam, you're probably safe. On the other hand, if you're a government employee, if you manage highly sensitive Linux servers, data centers, or work in a big multi-national corporation, then you should expect at one point or another to discover Fysbis on your machines.
