UK high street bank Hbos is investigating how a customer who requested a copy of her bank statement ended up being sent the confidential details of 75,000 other account holders.
An inquiry has been launched after Stephanie McLaughlin, 22, asked Hbos for a bank statement but received five packages containing 2500 sheets containing other customers names, sort codes and account details instead.
According to press reports, each page had details for 30 accounts, including pay-in and withdrawal information.
McLaughlin has now sent the packages back to the bank.
Hbos has apologised for the incident, which it says is "serious" but "isolated". The bank says it will take steps to ensure there is no security issue for customers as a result the blunder.