Battered from within and without, the banking industry must work much harder and wait much longer to restore its reputation, one of the country's most senior bankers said Tuesday.

Four years after the financial crisis, banks have yet to regain the trust of their customers — and the new wave of industry scandals this year has only exacerbated the damage, Irene Dorner, the chief executive of HSBC USA, told an industry crowd on Tuesday evening. In a speech that was part rally and part reprimand, she warned her colleagues and competitors that banks need to change more than just their capital levels to fully recover from the crisis.

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