The Stuxnet threat has made the news in a big way lately, due to its ability to spread via different venues and its use of forged digital certificates for authentication, as well as its targeting of programs that are used for industrial and critical infrastructure control and management (such as utility companies). It can make changes to the code that’s used to control automated systems responsible for delivering electrical power – a scary thought. Some say the U.S. is not taking the threat seriously enough, and others say the European Union is overreacting to it, saying it represents a “paradigm shift” that requires rethinking current critical infrastructure defense philosophies. You can read more about this difference in response here:
http://news.cnet.com/8301-27080_3-20019124-245.html?part=rss&subj=news&tag=2547-1_3-0-20