Japanese police sent papers on a 16-year-old boy to public prosecutors Thursday over a suspected distributed denial of service (DDoS) attack on an online game company. It was the first criminal accusation by police in the country against a DDoS attack, which entails saturating a particular server or computer with large amounts of data, according to Tokyo’s Metropolitan Police Department. The high school student in the southwestern city of Kumamoto has admitted the charges, sources familiar with police investigations said. He told investigators that he was frustrated after the game company froze his game account and that he had a lot of fun to make numerous attacks, according to the sources. He is suspected of carrying out similar attacks on two other companies as well, the sources said.