A report published by Sophos has revealed that 70% of virus activity in the first half of 2004 can be linked to a German teenager. Sven Jaschan, 18, is the self-confessed author of the Netsky and Sasser worms which hit internet users hard in the first six months of the year.
Just two of Jaschan's viruses, the infamous Sasser worm and Netsky-P, account for almost 50% of all virus activity seen by Sophos up until the end of June. Counting Jaschan's other released variants of the Netsky worm, the total figure accounts for over 70%.