By | February 18 2013 1:10 PM

Prisoner X, recently identified as an Australian named Ben Zygier who emigrated to Israel around 2000 and changed his name to Ben Alon, knew something that the Mossad, Israel’s intelligence agency, didn’t want him spreading. We may never know exactly what, but speculation around two theories is buzzing: Zygier may have been about to become a double agent for the Australian government, or he may have been about to hand over information on a 2010 Israeli operation to assassinate a Hamas operative.