# Programmable Logic Controllers (PLCs)

Type: Technology

Source: Cyber Intelligence Brief — https://getcyberbrief.com/entity/programmable-logic-controllers-plcs
Canonical HTML page: https://getcyberbrief.com/entity/programmable-logic-controllers-plcs

## Timeline

- **2026-07-31**: Public disclosure and political response — Minnesota memo detailing the attack leaked; President Trump downplays Iran connection at cabinet meeting, blaming local authorities.
- **2026-07-30**: CISA warning issued — CISA releases public alert urging water facilities to disconnect vulnerable internet-facing industrial equipment, noting hackers are targeting entities of all sizes.
- **2026-07-30**: FBI and EPA issue joint warning — A public service announcement warns of cyberattacks across at least seven states, urging utilities to secure PLCs and adopt stronger authentication.
- **2026-07-28**: Minnesota water utilities hit by coordinated cyberattack — Over 30 facilities, including those serving Braham and Plymouth, experienced operational disruptions. Water quality remained uncompromised.
- **2026-07-26**: Attack begins — Hackers target water systems in Minnesota and other states, compromising PLCs late Sunday night into Monday morning.
- **2024**: EPA audit finds critical cybersecurity shortfalls — More than 70% of over 1,000 inspected water utilities did not meet basic cybersecurity standards, highlighting systemic vulnerability.

## Recent coverage (2 stories)

### 7-State Water Hack Wave Exposes 70% ICS Gap as FBI Warns of Iranian Threats
2026-07-31 20:58:02 · Sentiment: Bearish · Impact: 8/10 · Sources: 2

A coordinated cyber campaign against water systems across seven states exposes deep operational technology vulnerabilities. With over 70% of utilities failing EPA audits, the incident raises urgent questions about critical infrastructure resilience and the looming Iranian threat.
Full story: https://getcyberbrief.com/story/fbi-warning-water-cyberattacks-7-states-70-percent-noncompliance

### 30 water systems hit in PLC attack; CISA warns of Iran link and OT exposure
2026-07-31 20:55:24 · Sentiment: Very Bearish · Impact: 8/10 · Sources: 2

A coordinated cyberattack compromised PLCs at water utilities across multiple states, forcing boiler-water advisories and manual operations. CISA issued an urgent warning, and officials suspect Iranian involvement. For cybersecurity pros, the incident highlights the dire state of OT asset exposure and the need for better ICS segmentation.
Full story: https://getcyberbrief.com/story/water-systems-cyberattack-ics-plc-iran

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