Internet chaos was caused by one boy

[IE]

A self-confessed computer vandal arrested in May was responsible for 70 per cent of all viruses received worldwide in the first half of this year.

Sven Jaschan, 18, was still at school in Germany when he admitted writing and spreading the Sasser and Netsky "worms" and their variations, which caused vast irritation and damage...............

http://www.telegraph.co.uk/news/mai...04.xml&sSheet=/news/2004/08/04/ixnewstop.html