Russia has developed a cyber weapon that can disrupt power grids, new research finds - ScienceAlert:
"Hackers allied with the Russian government have devised a cyber weapon that has the potential to be the most disruptive yet against electric systems that Americans depend on for daily life, according to US researchers.
The malware, which researchers have dubbed CrashOverride, is known to have disrupted only one energy system - in Ukraine in December.
In that incident, the hackers briefly shut down one-fifth of the electric power generated in Kiev.
But with modifications, it could be deployed against US electric transmission and distribution systems to devastating effect, said Sergio Caltagirone, director of threat intelligence for Dragos, a cybersecurity firm that studied the malware and issued a report on Monday.
And Russian government hackers have already shown their interest in targeting US energy and other utility systems, researchers said.
...That attack (Ukraine), which left 225,000 customers without power, was carried out by Russian government hackers, other US researchers concluded..."