Computer games giant Sega has been targeted by hackers who have obtained personal information about users of its Sega Pass network.

The company has told users that email addresses, dates of birth and encrypted passwords have been obtained.

All users' passwords have since been reset and users have been warned to ignore suspicious emails asking for more personal information.

Sony and games company Codemasters have also been hit by hackers recently.

Hackers claim to have breached Sony – again

Sony had data stolen from 77 million users of the PlayStation network in April.

Earlier this month, personal information and passwords were stolen from users of Codemasters, but no financial details were obtained.

A message on Sega's website simply said: "Sega Pass is going through some improvements so is currently unavailable for new members to join or existing members to modify their details including resetting passwords."

In an email from Sega to customers, the company said: "We have identified that unauthorised entry was gained to our Sega Pass database.

"We immediately took the appropriate action to protect our consumers' data and isolate the location of the breach. 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."