Received today per Email from Spread Firefox.

The Spread Firefox Team became aware this week that the server hosting Spread Firefox, our community marketing site, has been accessed by unknown remote attackers who attempted to exploit a security vulnerability in TWiki software installed on the server. The TWiki software was disabled as soon as we were aware of the attempts to access SpreadFirefox.com. This exploit was limited to SpreadFirefox.com and did not affect mozilla.org web sites or Mozilla software.

We have scanned Spread Firefox servers and at this time do not believe any sensitive data was taken, but as a precautionary measure we have shutdown the site and will be rebuilding the web site from scratch. We also recommend that you change your Spread Firefox password and the password of any accounts where you use the same password as your Spread Firefox account. We will notify you again when the site is back up with instructions on how to change your password. (Note: We do use MD5 hashing on the passwords, but MD5 cannot protect all passwords against off-line dictionary style attacks.)

After Spread Firefox was compromised in July, we instituted procedures to ensure that we apply all security fixes to the software running the site (Drupal and PHP) as soon as they become available. Unfortunately, those procedures overlooked the installation of the TWiki software since it is not used by the main Spread Firefox site. When the system is rebuilt, all the software will be audited to ensure that security updates will be applied in a timely manner. We deeply regret this incident and any inconvenience this may have caused you. Sincerely,

Spread Firefox Team
Mozilla Foundation