Microsoft has warned Xbox users that a certificate leak may compromise some account information.
The leak was for a certificate that allows anyone who takes control of it to impersonate the Xboxlive.com domain. Attackers wouldn't be able to contact users, but would instead be able to intercept data sent to the website by essentially making a cloned secure connection and act as a middle man to the real Xboxlive.com.
Microsoft noted that they have already revoked trust in the certificate so there should be no issue as they haven't been made aware of any attacks as of yet. All of your personal information is safe unless you hand over your name and password so it should not result in any real issues.
Of course, be sure to contact Microsoft if you suspect any of your information has been compromised.
[ZDnet]
