In the three months since Stuxnet appeared for the first time, a total of 19 Siemens customers worldwide from an industrial environment have reported an infection with the Trojan (as of October 21, 2010).

In none of the cases known to Siemens from the industrial environment was a plant's control system affected.

In all cases Stuxnet exploited security gaps in Windows-based operating systems. The virus could be removed in every case without any adverse effects on plant processes. In none of the cases did Stuxnet influence control software or even attempt to do so. 

Dematic recommends customers, who have Siemens Simatic Step 7 and / or Siemens WinCC Software installed, to take preventive measures to protect their systems: 

Sysclean, the publicized tool from TrendMicro for detecting and removing the virus, is available for downloading. You can find out easily whether your computer has been infected by the virus. The virus can also be detected and removed with commercially available virus scan software. In addition, Microsoft closed the security gaps used by the virus as early as August, so the virus can no longer infiltrate the protected environment of industrial plants, provided that the operating system has been updated accordingly. 

More detailed technical information on Stuxnet are available on the Siemens website:

http://support.automation.siemens.com/WW/view/en/43876783 

Dematic will continue to observe this issue with high priority, even though until today none of the currently installed Dematic systems is known to be affected.