In the massive DDoS attack against internet watchdog Spamhaus, a 16-year-old London schoolboy was arrested and the British police claim he is part of an international gang of cyber-crooks.

"The suspect was found with his computer systems open and logged on to various virtual systems and forums," says the police document shown to the London Evening Standard. "The subject has a significant amount of money flowing through his bank account. Financial investigators are in the process of restraining monies."

The police document states that the Spamhaus attack in March was the "largest DDoS attack ever seen," and claims the performance of the London Internet Exchange was hard hit. The attack caused "worldwide disruption of the functionality" of the internet, it states.

Because of the work it does, Spamhaus is more targeted than most. The organization compiles lists of ISPs, domains, and email servers that are known spammers so service providers can block off huge chunks of incoming emails offering fake Viagra tablets, dodgy dating, and malware.