Lack of info on Tesco Bank hack frustrates fellow lenders

Cyber breach: Around 9,000 customers were affected after Tesco bank was hit by hackers,last year.

British banking executives and security experts are growing frustrated at the dearth of information available more than three months after £2.5mil (RM13.72mil) was stolen from Tesco Bank in the UK's biggest financial cyber heist.

Security officers normally share information on an informal basis immediately after a major cyber incident so that the other banks can check their systems, sources at four of Britain's biggest lenders said.