I must add here that in a recent case of a co-operative bank, the entire operations, maintenance and management of the computer systems were totally in the hands of the firm which supplied the computer software and this led to a fraud and loss for the bank. Such cases cause reason for substantial concern.
While the aspects relating to physical security leave a lot to be desired with even the most basic security requirements not being in place (like access for unauthorised personnel even to sensitive Cash holding areas), the security features in the computer systems are not fully fool proof in some banks.