The SCADA based systems in the US are now an open target for smaller nations to attempt to get even with Pax Americana. Stuxnet is only the first case of an industrial virus unleashed on a specific nation. In the future, the US may end up being targeted with a modified version of Stuxnet.
“Countries hostile to the United States may feel justified in launching their own attacks against US facilities, perhaps even using a modified Stuxnet code,” ISIS concluded. “Such an attack could shut down large portions of national power grids or other critical infrastructure using malware designed to target critical components inside a major system, causing a national emergency.”