The first known virus to specifically target SCADA systems has been discovered (see CNET article). The virus spreads via USB drives, and hunts for Siemens control systems installed on the infected computer. The virus appears to transmit information from these systems back to a remote server, and gains access to the local control system database. The ultimate purpose of the virus is unknown. It is well known that malicious interception of SCADA systems could cause widespread infrastructure failures, including power outages.
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