Gaming giant Sega has become the latest hacking victim to have its user data exposed with over a million customers affected.
Hackers stole the personal data of 1.3 million customers from the Japanese company's European website.
An email was sent by Sega to its customers using the Sega Pass system on Friday admitting personal details including email addresses, dates of birth and protected passwords had been taken.
But the company said no financial information was stolen.
The system was taken offline on Thursday as user passwords were reset, but at the time of writing the Sega Pass system was still unavailable online.
Sega users have been alerted that they might receive suspicious emails asking for personal details.
The email from Sega to customers said: "We have launched an investigation into the extent of the breach of our public systems.
"We have identified that a subset of Sega Pass members' emails addresses, dates of birth and encrypted passwords were obtained. To stress, none of the passwords obtained were stored in plain text.
"Please note that no personal payment information was stored by Sega as we use external payment providers, meaning your payment details were not at risk from this intrusion."
The Sega cyber attack follows similar thefts targeting Sony and games company, Codemasters.
In June personal information and passwords were stolen from Codemasters, but again no financial details were taken.
Earlier this year, the Sony PlayStation network suffered two hacker attacks causing one of the worst security lapses ever.
One hundred million games console users may have had their personal data stolen.
The hackers who claimed responsibility for the Sony attacks, LulzSec, have apparently denied the Sega security breach.
A Tweet using the account @LulzSec said: "@Sega - contact us. We want to help you destroy the hackers that attacked you."