The personal data of nearly 200,000 Grand Theft Auto (GTA) fans is for sale on hacking forums, after a fan site for the game was hacked.

Last month, hackers breached the forums of GTAgaming.com, which provides news, information and discussion about the series, and gained access to email and IP addresses, dates of birth and hashed passwords.

The data was discovered by security researcher and breach expert Troy Hunt, who found it being traded on a now-defunct hacking forum and contacted Motherboard.

When contacted, site administrator Shawn Harkin told Motherboard that white he knew his website had been breached, he had no idea that users' personal details had been stolen.

"I was aware of a hack and had already been reversing the damage, but it was not until your email that I had heard that any data had actually been obtained," he told Motherboard. However, he was quick to note that the number of affected users may be much smaller than initially thought.

He pointed out that a substantial proportion of the 197,000 affected accounts are made up of banned accounts, spambots and inactive accounts created as early as 2003.

The hackers broke into the site by exploiting flaws in the vBulletin forum software, but Harkin has now taken action against this. "We have now closed the forums permanently, and any accounts not updated within the next couple weeks will be deleted from the database," a post alerting users to the breach read.