DBS said the move is designed to give customers time to detect and stop unauthorised activity on their accounts. SINGAPORE: From Mar 7, DBS digital banking users will need to wait for 12 hours before they can increase their transfer limits or add a new payee, as part of security measures to combat "increasingly sophisticated" scams, the bank said on Friday (Feb 20). In an email to its customers, DBS said that 12-hour cooling periods will be introduced for adding a new recipient, increasing