A proof of concept has been released for one of the vulnerabilities announced in Decembers Microsoft Update. The vulnerability in Message Queuing Service (ms07-065) now has a working proof of concept exploit available to the public. If you have not updated, or do not have automatic updates enabled, please do so.
Also, with the recent death of a foreign former prime minister, be on the lookout for emails or website attempting to lure you there as most of these will likely been social engineering/scam attempts.