The data that was visible online included full names, addresses, email addresses, dates of birth, phone numbers, TalkTalk customer numbers, and bank details. The BBC has reported that TalkTalk failed to inform its customers that their personal details were compromised during a 2015 security breach . A recent investigation by the BBC 's Watchdog team found the company may have incorrectly told them they were not affected by the hack , which affected 157,000 TalkTalk customers . Reporters found customer details , including bank details and dates of birth , were accessible online . When confronted with the findings , , BT said it was a genuine error and that it had informed the customers , apologised and offered them free credit monitoring services .
The BBC has reported that TalkTalk failed to inform its customers that their personal details were compromised during a 2015 security breach . A recent investigation by the BBC 's Watchdog team found the company may have incorrectly told them they were not affected by the hack , which affected 157,000 TalkTalk customers . Reporters found customer details , including bank details and dates of birth , were accessible online . When confronted with the findings , , BT said it was a genuine error and that it had informed the customers , apologised and offered them free credit monitoring services .