According to the Channel Insider blog, Microsoft has released an out-of-band patch (MS10-046) that attempts to repair the .LNK vulnerability that has been used to attack Siemens S7, PCS7 and WinCC-based HMI systems.
to a page on the Siemens site containing information on the Trojan that has affected Siemens software. The good news is that so far, apparently only one site has actually been hit. We will provide more updates as they become available.
FOR IMMEDIATE RELEASE