NEW: Frank Bisignano, the head of the Internal Revenue Service and Social Security Administration, sits atop two government organizations that store vast reams of sensitive financial data about every taxpayer. But when he was the co-chief operating officer at JPMorgan Chase, he spied on fellow executives—using his authority over the security department and position to access sensitive information and internal communications, according to people familiar with the matter who spoke with the Wall Street Journal. After years of complaints about his behavior, JPMorgan CEO Jamie Dimon told Bisignano he would support him finding a job elsewhere. Once he left, investigators from the legal department found digital traces of the spying activity, including records that showed email access, and the bank instituted new rules requiring approval from the legal department Courtney Forrest, an attorney for Bisignano, denied that that he never spied on co-workers. She said he “never directed anyone to look through any employee’s or executive’s communications or engaged in any form of surveillance.”