A whistleblower fired last year after publicly criticizing customer security measures at Vanguard Group has sued the mutual fund giant in federal court in Philadelphia, citing violations of whistleblower provisions of the Dodd-Frank Act. In a complaint filed on Dec. 2, former stockbroker Karen Brock accused the firm of infliction of emotional distress and wrongful termination of a whistleblower. Read the original story from TheStreet.