Microsoft has warned users of its Xbox Live online gaming service of possible attempts to steal personal data after the Sony PlayStation Network was hacked.
The problem appeared to be restricted to one game, the popular Modern Warfare 2, the US computer giant said.
"Users may receive potential phishing attempts via title specific messaging while playing Modern Warfare 2," it said on the XBox Live Status website.
"We are aware of the problem and are working to resolve the issue. We apologize for any inconvenience this may cause and thank you for your patience."
Xbox Live allows Xbox 360 console users to download games and music and play online against other gamers.
Sony turned off its PlayStation Network and Qriocity streaming music service on April 20 after hackers stole users' data.