Video-game-maker Capcom has warned a ransomware attack might have compromised gamers’ personal information.

Up to 350,000 people could be affected, it said, and some of its own financial information had been stolen.

The Japanese developer is best known for franchises such as Resident Evil, Street Fighter, and Monster Hunter.

A week-and-a-half earlier, it had said there was no indication customer information had been accessed.

But in an update on Monday, Capcom confirmed its servers had been hit by an attack on 2 November.

Ransomware is malicious software that typically threatens to block a victim’s access to their own records unless a blackmail payment is made.

In this case, the attackers digitally scrambled some of the data on Capcom’s servers, making it impossible to view or amend, and destroyed some files outright.

The Ragnar Locker hacker group had then demanded to be paid to undo the encryption involved, Capcom said.