Testing the power grid.
Via The Hill:
Iranian hackers infiltrated a small New York dam in 2013 in a previously undisclosed incident, according to The Wall Street Journal.
Investigators said that the hackers didn’t take control of the system, but were probing its defenses. The White House was alerted when officials initially believed the intrusion occurred at a much larger facility in Oregon.
The still-classified breach occurred amid a wave of Iranian hacks on U.S. banks and just three years after a computer worm believed to be built by the U.S. and Israel damaged nuclear infrastructure in Iran.
The incident fits a pattern openly described by U.S. officials who warn that hackers from Russia, Iran and China are testing U.S. critical infrastructure networks for vulnerabilities.