Origin Energy says as many as 60 customers had their full bank account numbers accessed by a hacker in July, but customer data has not been leaked or disclosed publicly.

Origin Energy says as many as 60 customers had their full bank account numbers accessed by a hacker in July, but customer data has not been leaked or disclosed publicly.

The gas and electricity supplier moved to beef up security by limiting access to internal customer files after an ex-Accenture employee was suspected of stealing customer data.