Japanese gaming giant Nintendo has announced hackers since April this year have compromised 300,000 users accounts on its server.
According to a statement by the gaming company, the hacker gained access to users personal information such as email addresses and birthdays, though the company said no credit-card details were accessed during the breach.
The hackers broke into Nintendo Network IDs, intended for services on the Wii U and Nintendo 3DS, and then migrated to Nintendo Accounts, which can be used for purchases at Nintendo's official online store.
The first hack occurred in April with 160,000 accounts compromised, and later another breach happened compromising 140,000 accounts.
"We deeply apologise for causing trouble and worries to customers," Nintendo said in a statement, pledging to "enhance security" and also assuring the event won't occur in the future.
The company promised to reimburse Nintendo accounts that the hackers used for fraudulent purchases.