1.3 million users of the Sega Pass online gaming network have had their accounts accessed by hackers, in another in a series of well-publicised online security breaches.

Sega has warned its customers to show extra vigilance after names, birth dates, email addresses and encrypted passwords were all accessed.

Customers’ credit card details are said to be safe, as Sega Pass uses an outside provider to accept payments.

Sega Pass has since been shut down, with the game developer not indicating whether the network will be reopened.

Although substantial, the security breach pales in comparison to that suffered by Sony’s PlayStation network, which had more than 100 million users’ account data accessed.