2009 was characterized by complex malicious programs with rootkit functionality; global epidemics; the Kido (Conficker) worm; web attacks and web botnets; SMS fraud and attacks on social networks. Malicious programs became significantly more complex. For instance, whereas in the past the number of malware families with rootkit functionality could be counted in handfuls, in 2009 such programs not only became widespread but also markedly more sophisticated.
