Home Depot Inc, the world's largest home improvement chain, said about 53 million more email addresses were taken during a recent breach of its payment data systems.
In September, the company said some 56 million payment cards, including email details, were likely stolen in a cyberattack. This suggests the hacking attack was larger than last year's breach at Target Corp.
Criminals used a third-party vendor's user name and password to enter the perimeter of its network, Home Depot said in a statement.
(Reporting by Devika Krishna Kumar in Bangalore)