Five agencies warn of active threat to Siemens S7 PLCs (AA26-231A)

On Aug. 19, NSA, CISA, FBI, DOE, and EPA published joint Cybersecurity Advisory AA26-231A warning of an active cyber threat to Siemens S7 Series PLCs (S7-200/300/400/1200/1500). The agencies describe reconnaissance and capability development against Internet-exposed or poorly segmented controllers and urge inventory, patching, Internet isolation, stronger access controls, and monitoring. The advisory does not attribute the activity to a named actor.

How outlets across the spectrum are covering this story. We link out — headlines belong to their publishers; the summary above is ours.

• CISA · center · factuality: very-high
  Defending Against an Active Threat to Siemens S7 Series PLCs