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Julius Baer Data Used by WikiLeaks for Assault on Bank Secrecy

A former Julius Baer Group Ltd. employee’s effort to discredit the 121-year-old bank by handing stolen client data to WikiLeaks has put Swiss banking secrecy back in the spotlight.

Rudolf Elmer, who worked for Zurich-based Baer’s Cayman Islands unit until December 2002, says he wants to expose tax evasion through the use of offshore accounts. He was detained by Swiss prosecutors after handing over data on about 2,000 cross-border accounts to WikiLeaks’ founder Julian Assange on Jan. 17.