Hackers Siphon Thousands of Tesco.com Customer Usernames and Passwords

Tesco was hit by a third round of IT failure in under two months after it revealed that cyber attackers siphoned thousands of Tesco.com customer usernames and passwords and posted them online.

One of Britain's largest supermarkets said that it has deactivated the 2000 affected customers' accounts in a bid to protect their data from being shared further.

"We have contacted all customers who may have been affected and are committed to ensuring that none of them miss out as a result of this," said Tesco in a statement. "We will issue replacement vouchers to the very small number who are affected." Earlier this month, Tesco accidentally revealed hundreds of customer email addresses after it was trying to apologise for a pricing error, by including all recipients' email addresses in the 'to' field.