Sophos: Malware Doubled in 2010
The report also found that attackers are increasingly focusing on social networks, with 40 percent of social networking users receiving malware via social media sites. That's up from 36 percent in 2009.
Also, spam coming from social networks increased by 57 percent to 67 percent, while phishing attacks increased from 30 percent to 43 percent. The United States again took the dubious honor of being the top spam relayer, with 16 percent of all spam e-mails originating in the U.S.
In light of these findings, organizations are encouraged to improve their security by addressing social networking usage through acceptable use policies or instituting some access restrictions.