Conficker still dominating attack landscape

The Conficker botnet was by far the largest source of online attacks on the web in the first quarter of 2009, according to web services provider Akamai.

The company's quarterly 'state of the internet' report found that in the first months of the year, Conficker accounted for some two thirds of all attack traffic.

First appearing in late 2008, Conficker spread throughout the web in 2009. By March, the worm touched off a media firestorm when researchers noted that many of the infected machines were programmed to dial an instruction server on April 1.