In 2013, someone gained access to the operations center for the Bowman Avenue Dam, a small flood control dam on Blind Brook in Rye Brook, New York. The attackers were later identified in a classified Department of Homeland Security report as being the same Iranian group alleged to have been responsible for attacks on PNC Financial Services Group, SunTrust, and Capital One Financial.
The attack was first made public in December 2015 by a Wall Street Journal report. Now, according to a CNN report, the US Department of Justice is preparing to file an indictment against those believed to be behind the intrusion—individuals believed to have been operating at the direction of the Iranian government.
Calling the intrusion an "attack" may be a bit of an overstatement—the controls of the dam were not accessed, according to government officials cited anonymously by CNN, and only "back office systems" were penetrated. The intrusion was made possible by a broadband cellular modem used to connect the small facility to the Internet, and the Bowman Avenue facility was targeted by a network scan for industrial control systems exposed to the Internet.