The French Hacker Who Took His 'Hack Back' Against anti-Semites Too Far

Gregory Chelli, known by the nickname Ulcan, worked to undermine the online efforts of notorious anti-Jewish activists but his actions seemed to have crossed a line. Now France wants him extradited from Israel

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Gregory Chelli, known by the nickname "Ulcan," at home in Ashdod, May 2017.
Gregory Chelli, known by the nickname "Ulcan," at home in Ashdod, May 2017.Credit: Ilan Assayag
Gili Izikovich
Gili Izikovich
Controversial French comic Dieudonne M'Bala M'Bala, answers reporters ahead of European elections, Paris, France, May 13, 2009.Credit: AP Photo/Remy de la Mauviniere
A still of Gregory Chelli on his computer from "The Patriot."Credit: Daniel Sivan
A still of Gregory Chelli on his computer from "The Patriot." Credit: Daniel Sivan

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