Iranian hackers penetrated the computers controlling a dam near New York, reveals the Wall Street Journal.
The 2013 attack did no damage but revealed information about how computers running the flood control system worked, said the paper.
Hackers working for nation states regularly hit national infrastructure targets, said a separate AP report.
About 12 times in the last decade hackers have won high-level access to power networks, it said.
Original Source: BBC
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