DUBLIN (AP) - Irish betting company Paddy Power says it is notifying hundreds of thousands of customers that most of their profile information was stolen in 2010, but hackers did not gain their credit card details or log-in passwords.

DUBLIN (AP) Irish betting company Paddy Power says it is notifying hundreds of thousands of customers that most of their profile information was stolen in 2010, but hackers did not gain their credit card details or log-in passwords.

Paddy Power confirmed the biggest security breach in the company's history Thursday involving the theft of customer names, usernames, addresses, emails, phone numbers, birthdates and security questions.

The company says it was tipped off about the breach in May and is now sending emails to 649,055 customers advising them to consider changing their security question on all other online accounts. It says hackers might try to use their answer provided to Paddy Power to gain access to those.

Peter O'Donovan, managing director of online operations, says he sincerely regrets the breach occurred.