Cisco has released an update to their Jabber for Windows application. This update fixes a critical vulnerability that would allow an attacker to potentially execute arbitrary code on your computer without requiring any action on your part while the application was running in the background.
If you use Jabber for Windows please update it immediately. The Jabber for Windows update can be downloaded here. Enter your MRU login credentials when prompted to gain access to the download. Although Jabber for Mac has not been effected, it is still a good idea to keep it updated. The latest version can be downloaded here.
If you are only using Jabber on your iphone or Android smartphone, you are not affected by this vulnerability. For more details, read the Latest Hacking News article.