 First, he hacked internet service provider Superonline and caused the system to be out of service for 7 days in 1999.In late of 2001, he was put in court by claim of hacking one of the oldest banks of Turkey, The Osmanlı Bankası, now part of Garanti Bank.He left "t.ş was here" message on the website of bank and also published the personal photos of all customers which had been kept on bank systems.