The FBI ,NSA CISA and other U.S. federal agencies are warning owners and operators of industrial control systems (ICSs) of an active cyber threat to Siemens S7 Series PLCs. Threat actors are targeting U.S.-based Siemens PLC installations using AI-generated exploitation scripts disguised as legitimate monitoring tools. The actors leverage Internet scanning services to find Internet-exposed PLCs running outdated software or that are otherwise poorly protected.
The most targeted sectors include Critical Manufacturing, Energy, Water and Wastewater, Chemical, Food and Agriculture, and Commercial Facilities.
More details can be found here: https://www.ic3.gov/CSA/2026/260819.pdf
Dan Moore, Sr. Director CIAM Strategy at FusionAuth, provided the following comments:
“People are already using AI to one-shot drivers for obsolete printers, so sophisticated actors were bound to go after long-lived, seldom-updated, high-value systems like these PLCs.
Using AI gave attackers faster discovery and exploitation of the attack surface. The suggested defenses are what we’ve heard over and over again: apply patches, don’t put systems on the internet, use strong access controls, monitor important systems, and don’t leave authentication in the default state.
Hackers don’t need AI to discover new vulnerabilities. All they need to do is exploit weaknesses that we know we should have patched long ago.”
Critical infrastructure should get about patching all the things. Because the nation depends on their actions.
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This entry was posted on August 20, 2026 at 8:12 am and is filed under Commentary with tags FBI. You can follow any responses to this entry through the RSS 2.0 feed.
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The FBI Warns of Hackers Using AI to Break into Water Systems
The FBI ,NSA CISA and other U.S. federal agencies are warning owners and operators of industrial control systems (ICSs) of an active cyber threat to Siemens S7 Series PLCs. Threat actors are targeting U.S.-based Siemens PLC installations using AI-generated exploitation scripts disguised as legitimate monitoring tools. The actors leverage Internet scanning services to find Internet-exposed PLCs running outdated software or that are otherwise poorly protected.
The most targeted sectors include Critical Manufacturing, Energy, Water and Wastewater, Chemical, Food and Agriculture, and Commercial Facilities.
More details can be found here: https://www.ic3.gov/CSA/2026/260819.pdf
Dan Moore, Sr. Director CIAM Strategy at FusionAuth, provided the following comments:
“People are already using AI to one-shot drivers for obsolete printers, so sophisticated actors were bound to go after long-lived, seldom-updated, high-value systems like these PLCs.
Using AI gave attackers faster discovery and exploitation of the attack surface. The suggested defenses are what we’ve heard over and over again: apply patches, don’t put systems on the internet, use strong access controls, monitor important systems, and don’t leave authentication in the default state.
Hackers don’t need AI to discover new vulnerabilities. All they need to do is exploit weaknesses that we know we should have patched long ago.”
Critical infrastructure should get about patching all the things. Because the nation depends on their actions.
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This entry was posted on August 20, 2026 at 8:12 am and is filed under Commentary with tags FBI. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.