US energy officials have found unexplained communication equipment inside some Chinese-made inverter devices.
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Reuters reported the presence of undocumented and “rogue” communication devices in a number of Chinese-made solar inverters. These could potentially introduce unregulated and undocumented remote communication channels to the inverters, by which an actor could remotely bypass the cybersecurity firewalls that utility companies use to prevent direct communication back to China.
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It doesnt have to be a “cyberattack” for it to be the fault of chinese inverters. There have been plenty of cases of faulty automatic firmware updates bricking all online inverters of a brand at the same time. Thats why you always cut those things off from the internet and set up your own monitoring.