All hail Mega-Dik

A new champion has been crowned in the spam wars: the botnet Mega-Dik, used solely to push penis-enlargement products, has taken over from the Storm botnet as the most prolific sender of spam.

Mega-Dik now accounts for 32% of all spam – about 3 billion messages per day – and is growing its army of zombie computers thanks to increasing high broadband penetration and low antivirus protection in Asia and North America.

Seventy percent of all spam is now coming from just five botnets: Mega-D, Pushdo, HTML, One Word Sub and Storm. The average inbox received 4,351 junk emails in 2007.