Austrian police arrests "country’s youngest hacker"

http://en.wikipedia.org/wiki/Federal_Police_(Austria)

Austrian federal police have arrested a 15-year-old student who allegedly cracked the servers of 259 companies during a three-month hacking spree. The student is supposed to have indiscriminately hacked the servers of companies in Austria and internationally with a selection of hacker tools. As part of the attacks, he defaced web sites and boasted about his actions on Twitter, and also posted links to data dumps of stolen confidential information and user data. He confessed to the actions as soon as he was arrested by the police. 

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Story added 18. April 2012, content source with full text you can find at link above.