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Attackers compromised Internet-facing OT devices and caused file and display manipulation, operational disruption, and financial losses across sectors.
So far the attacks, which compromise virtual network computing (VNC) connections in OT systems, have not been particularly destructive, but this could change as they evolve.
The prolonged attack, which lasted 300+ days, is the first known compromise of the US electric grid by the Voltzite subgroup of the Chinese APT; during it, the APT attempted to exfiltrate critical OT infrastructure data.
"Voltzite," the APT's subset that focuses on OT networks and critical infrastructure, has also compromised targets in Africa.