The inquiry has also looked into other aspects of bank conduct, and ANZ Bank deputy chief executive Graham Hodges on Monday also faced questions over the bank's partially owned Malaysian subsidiary AmBank, which is embroiled in a corruption scandal centring on Prime Minister Najib Razak. After reports in The Australian that a member of staff in CBA was sacked eight weeks after refusing to sign off on an IT contract now at the centre of a bribery scandal, committee chair Senator Fawcett on Monday said he had "concerns about the ability of people within the system to report concerns and be listened to." Staff members who blew the whistle internally on misconduct in its financial planning and life insurance arms also say their concerns were not acted on. In response, Mr Cohen responded that CBA had "considerably" revamped its internal systems for whistleblowers in the last year, introducing a hotline run by an external contractor to allow staff to raise concerns.