Allen & Overy has recruited to its New York office the former chief of the securities fraud unit for the Southern District U.S. Attorney’s Office.

David C. Esseks will join the British legal giant as a partner specializing in white-collar and securities litigation. From 2003 until June 2007, Esseks served as head of the nation’s premier white-collar prosecution unit, supervising a staff of 20 Assistant U.S. Attorneys. He was involved in accounting fraud prosecutions of executives at Refco Inc., Collins & Aikman, Royal Ahold N.V., WorldCom Inc. and Adelphia Communications Corp.He also oversaw a number of options backdating investigations and insider trading cases.