The latest State of the Internet 2009 report by CA states that the most notable 2009 online threats were rogue/fake security software, major search engines, social networks and Web 2.0 threats. The report compiles trends from the first half of 2009.

CA researchers tracked the following trends in 2009:

Rogue or fake security software: Software that poses as legitimate Internet security software but is actually malware has experienced a significant surge in popularity. In the first half of 2009, CA added detection for 1,186 new variants of rogue security software, which is a 40% increase compared to the last half of 2008.

Read more here.