Prisoner X2

"Prisoner X2" (Hebrew: or ) is a placeholder name of a Mossad agent (described as an "important operative") who has reportedly been secretly imprisoned in Israel since about 2004, after he was convicted of treason (reportedly spying for Iran). Israeli lawyer Avigdor Feldman described this case as "a terrible security breach", and "much more grave, sensational, amazing and riveting from Zygier's case." The case was kept secret in Israel, and reports about it were deleted from Israeli news sites.

In May 2018, Richard Silverstein reported in his blog, Tikun Olam, that Prisoner X2, still unidentified, had been released from custody. In his report, Silverstein cited the work of with Walla!.