Camelot found suspicious activity on Sunday
The UK national lottery has been hacked with details of 26,500 accounts been accessed according to operator Camelot.
Camelot said no money had been stolen.
“We do not hold full debit card or bank account details in National Lottery players’ online accounts and no money has been taken or deposited.
“However, we do believe that this attack may have resulted in some of the personal information that the affected players hold in their online account being accessed.”
“We are currently taking all the necessary steps to fully understand what has happened, but we believe that the email address and password used on the National Lottery website may have been stolen from another website where affected players use the same details,” it said in a statement.
The firm said it first became aware of the issue on Sunday.