Shin Bet their tenures. Shin Bet The Israel Security Agency (ISA, "Sherut ha-Bitaẖon haKlali" "General Security Service"; ), better known by the acronym Shabak (, , ) or the Shin Bet (a two-letter Hebrew abbreviation of the name), is Israel's internal security service. Its motto is ""Magen veLo Yera'e"" (, lit. "Defender that shall not be seen" or "The unseen shield"). It is one of three principal organizations of the Israeli intelligence community, alongside Aman (military intelligence) and the Mossad (foreign intelligence service). Shabak is believed to have three operational wings: The counter-terrorist unit Yamas is directly subordinate to Shin Bet. Although
Tikun Olam (blog) mastermind behind Hamas' rocket program. The BBC World Service program, "Assignment", produced a radio documentary on the affair. The blog was the first to report that Anat Kamm, a former IDF soldier, was being secretly held by the Shin Bet for leaking secret military documents to "Haaretz" reporter Uri Blau. The security service had placed news of her arrest under gag so it could not be reported by Israeli media. Silverstein wrote in December 2010 that a prisoner, known as "Prisoner X", was held in extreme secrecy at Ayalon Prison. Silverstein wrote that this person was Iranian general Ali-Reza Asgari,