Said he was from CBA about an attempted transfer of $800 from my account to an international account and said they stopped it and wanted to verify if legitimate. I do have a CBA account and asked for the account number. He said the last 3 digits which did sound familiar (realised afterwards it was from my Ph number). I told him that I'd go straight to the bank and speak to someone in person and hung up. He was fishing to get info for more security. Do not give any info out.