One of the consistent themes at Black Hat is attacks on industrial control systems; which includes water plants, power plants, and oil refineries. One of the presentations was centered around using honeypots to determine the level of attack activity. An excellent article on the presentation and related material can be found here: http://gcn.com/Articles/2013/08/07/ics-honeypots.aspx?s=security_080813&admgarea=TC_SecCybersSec&Page=1
Some of the attacks can be mitigated with wolfSSL, by using our embedded SSL to secure firmware updates and eliminate MITM attacks. We`ve seen a number of progressive companies adopt our products to do exactly that.