Financial institutions are urged to gear up to anticipate future digital hazards as a recent technical glitch shakes the industry.

Over the weekend, an error in state-owned lender Bank Mandiri’s system puzzled customers as they found out the balance of their bank accounts had shrunk or mysteriously multiplied. The bank later apologized and explained that data relocation during system maintenance at the time had caused the data glitch.

However, a recent Mandiri report showed that at least 2,560 transactions were made through mobile and internet banking every minute as of June, meaning that any momentary slip-up could affect thousands of customers.

The Financial Services Authority (OJK) has demanded that Bank Mandiri immediately report to the authority and outline what really happened in its system as well as its efforts to mitigate the problem to ensure that such an incident would never happen again.

“Banks have to have and apply good operational standards if there is a system problem, by prioritizing the protection of customer rights,” said the OJK in a press statement on Sunday.

It also called on the banking industry to continuously review its IT systems to ensure that banks are prudent when taking management risks. “The banking Industry should pay attention to what happened [in Bank Mandiri] as it is important,” the OJK added.

Communication and Information System Security Research Center (CISSReC) chairman Pratama Persada explained that it was critical for an institution to pretest its system maintenance updates before publicly implementing the changes to avoid losing consumer trust.

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