Reuters has confirmed at least part of a rumor that the Xbox Live online service may have been hacked, that credit card numbers may have been at risk and that users' virtual currenecy (points) may have been stolen. Microsoft confirmed with the news agency that it is actively investigating reports of "fraudulent behavior and theft" on its Xbox Live online video gaming service, which has more than 6 million subscribers.

"Recently, there have been reports of fraudulent activity and account theft taking place on the Xbox Live network," a Microsoft represenative said in an emailed statement to Reuters.

We'll watch this story as it develops.