Microsoft’s Hotmail email service suffered a temporary outage Tuesday, related to problems with the Windows Live ID user-authentication technologies. Although the service is now back up and running normally, there are reports that some users’ accounts might have been compromised during the outage, allowing others to view account details and other private information.
Microsoft has apologized for any inconvenience this has caused customers. A posting to the Windows Live blog expanded on the explanation, noting that the outage was due to the failure of one server, increasing the load on our remaining servers and causing Windows Live ID logins to fail for some customers.
Microsoft is investigating this outage, and potential privacy violations.