The Confiker worm - arguably one of the nastiest critters to be unleashed in quite a while - is reportedly set to morph itself on April 1.

According to SRI's detailed analysis of Confiker, variant C uses a different domain generation algorithm and other tactics such as a peer-to-peer protocol to coordinate with other infected systems.

Looks like it's about to wreak more havoc - on April Fool's Day no less. If you want to know exactly what goes on under the hood then be sure to SRI's extensive write-up.