CISA urges water facilities to secure their Unitronics PLCs

News that Iran-affiliated attackers have taken over a programmable logic controller (PLC) at a water system facility in Pennsylvania has been followed by a public alert urging other water authorities to immediately secure their own PLCs. “The cyber threat actors likely accessed the affected device—a Unitronics Vision Series PLC with a Human Machine Interface (HMI)—by exploiting cybersecurity weaknesses, including poor password security and exposure to the internet,” the Cybersecurity and Infrastructure Security Agency (CISA) noted. … More →

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