Japanese Police Investigate Bitcoin Extortion Threatens Emails Linked to Multiple Kanto Cities

According to the Tokyo News reported on August 24, many cities in Kanto Prefecture in Japan have received threatening emails with terms such as "city bombing", and some cities have also demanded payment of the money in Bitcoin. On the same day, news was sent from Ruyu Town in Ibaraki Prefecture, Sano Town in Tochigi Prefecture, Gas City and Kawagoe Town in Saitama Prefecture, and cities from Kashiwa and Kimitsu in Chiba Prefecture. Each county has reported measures such as the temporary closure of buildings and access to control, and police are investigating the cost of the operation.