According to the Xbox.com support site, some users are experiencing issues with the redemption of download codes (or vouchers) purchased at GameStop for the most recent Call of Duty: Black Ops map pack.
"Users may experience issues redeeming Gamestop Call of Duty: Escalation map pack tokens," the service site currently reads. The known issue listing notes that Xbox Live's support team is aware of the issue and thanks users for their patience--which we've recently had time to exercise.
Additionally, under the 'Matchmaking' subheading on the support page, the site warns users with "potential phishing" scams that are ongoing during games of Modern Warfare 2.
"Users may receive potential phishing attempts via title specific messaging while playing Modern Warfare 2," the support team listed, again thanking users for their patience. The note adds that Xbox Live Support is aware of the scams and is looking to resolve the issue. A number of videos on YouTube feature the in-game message spamming.
Stephen Toulouse, Xbox Live's director of policy and enforcement, tells Shacknews, "It's standard operating procedure for us that if we see widespread phishing attempts we try to alert people." Toulouse notes that Infinity Ward is in the process of looking into the situation, and though the situation isn't really "related to Xbox Live per se," Xbox Support wanted to make people aware of the concern.
Lastly, as a quick public service announcement: For those experiencing traditional phishing attempts--users attempting to social engineer sensitive information from you, acting as official representative--please be mindful of the threat and don't share your details with anyone.
Stephen Toulouse updated Shacknews, letting us know that users discovered committing any phishing scams will have their Xbox Live account banned from the service, "up to and including thier consoles as well."