"Users may receive potential phishing attempts via title specific messaging while playing Modern Warfare 2," Microsoft warns. This should be more annoying than harmful, considering that every Modern Warfare 2 player has already had to learn to ignore messages from strangers out of self-preservation. Just be extra vigilant about ignoring people right now, because they might be trying to finagle your password or other personal info.
Microsoft says it's "working to resolve the issue."
