Regulatory

CISA warns of active threat targeting Siemens S7 PLCs

Atlas Watchline · October 19, 2026

Key facts

What happened

The advisory warns of an active threat to Siemens S7 Series PLCs

By the numbers

By the numbers

Population: 341,784,857

Key facts

Why it matters

The advisory says PLC targeting activity is broader than Siemens PLCs

Key facts

The details

NSA, CISA, FBI, DOE, and EPA are named as authoring agencies

Atlas Watchline

Read the full report

CISA and partner agencies say attackers are targeting Internet-exposed Siemens S7 Series programmable logic controllers and…

Read on Atlas Watchline

Read on Atlas Watchline