According to the head of Iran's Cyber Police (FATA), Brigadier General Kamal Hadianfar, his forces have arrested some 28,000 people and shut down some 47,000 websites in the past 6 years. During 2015, FATA arrested 53 ISIS supporters and deleted 132 so-called "terrorist websites." Additionally, he said Iran has been subject to some 1,000 cyber attacks on government websites, which Hadianfar said originated in Israel, Saudi Arabia, and the U.S.
Source: Cyberwarzone.com, December 7, 2015.