The Conficker worm is only third

Every month, ESET compiles a top list of computer viruses that spread around the world to find out which malware is currently threatening users' computers.

Researchers at ESET Virus Lab have noticed a new OS X malware. The backdoor, which can be controlled via an IRC channel called Tsunami, was created by transcribing and porting a Linux malware in 2002, nine years earlier. The virus can be used to launch remote DDoS attacks from infected Macintosh machines. The researchers believe that the infection of the old-new Trojan program does not pose a comprehensive threat for the time being, but rather only the OS X platform is being tasted and tested in the background.

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According to ESET's statistical system based on feedback from millions of users, in October 2011, the 10 pests shown above were the most widespread worldwide and were jointly responsible for 21,90% of all infections.

Source: antivirus.blog.hu, Eset