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SecurityWeekEduard Kovacs

Dozens of Minnesota Water Utilities Targeted in Coordinated OT Attacks

Part of the Minnesota story · since 29 Jul

Quiet for 11 weekslast report 11 Aug9 articles5 outlets
29 Jul · SecurityWeek first15 Sep1 Oct17 OctNowThis article1st of 9
  • Wed 29 Jul, 08:12 UTC. SecurityWeek, first report. Dozens of Minnesota Water Utilities Targeted in Coordinated OT Attacks. This article, 1st of 9.
  • Wed 29 Jul, 14:40 UTC. The Hacker News, its first report on the story. Cyberattack hits Minnesota water systems, one plant taken offline.
  • Wed 29 Jul, 19:50 UTC. Security Affairs, its first report on the story. Hackers Strike Minnesota Water Utilities, One Plant Briefly Offline.
  • Thu 30 Jul, 22:02 UTC. Dark Reading, its first report on the story. Minnesota Water Utility Attacks Expose Sector's Cyber-Risks.
  • Thu 30 Jul, 22:31 UTC. SecurityWeek. CISA urges utilities to secure PLCs after Minnesota attack.
  • Fri 31 Jul, 15:31 UTC. SecurityWeek. Cyberattacks on Minnesota Water Systems Investigated as Officials Warn About Iranian Hackers.
  • Sun 2 Aug, 09:01 UTC. Security Affairs. CISA urges removal of online PLCs after Minnesota water attacks.
  • Mon 3 Aug, 09:11 UTC. SecurityWeek. Iranian hackers hit water plants in seven states, safety assured.
  • Tue 11 Aug, 18:56 UTC. DataBreaches, its first report on the story. Judge Approves Data Rules for Change Healthcare Breach Deal.

A coordinated cyberattack on operational technology systems targeted over 30 water utilities in Minnesota on July 26 and 27, prompting investigations by state and federal agencies. Affected cities, including Maple Plain, Braham, South St. Paul, and Plymouth, reported impacts on automated control functions, but drinking water remained safe. The City of Braham temporarily offline its water plant during the incident.

While the origins of the attack are unclear, investigators are examining links to Iranian threat groups, noting vulnerabilities in cellular communication systems as potential entry points. Experts emphasized the importance of assessing risks in remote equipment communications to prevent similar attacks in the future.

How the story developed

All 9 articles
Quiet for 11 weekslast report 11 Aug9 articles5 outlets

9 articles from 5 outlets since 29 Jul. Quiet since 11 Aug. This was the first report.

Now29 Jul31234567891012First reportSecurityWeek · 29 Jul, 08:12Picked up againafter 8 days quiet
  • Wed 29 Jul, 08:12 UTC. SecurityWeek, first report. Dozens of Minnesota Water Utilities Targeted in Coordinated OT Attacks. This article, 1st of 9.
  • Wed 29 Jul, 14:40 UTC. The Hacker News, its first report on the story. Cyberattack hits Minnesota water systems, one plant taken offline.
  • Wed 29 Jul, 19:50 UTC. Security Affairs, its first report on the story. Hackers Strike Minnesota Water Utilities, One Plant Briefly Offline.
  • Thu 30 Jul, 22:02 UTC. Dark Reading, its first report on the story. Minnesota Water Utility Attacks Expose Sector's Cyber-Risks.
  • Thu 30 Jul, 22:31 UTC. SecurityWeek. CISA urges utilities to secure PLCs after Minnesota attack.
  • Fri 31 Jul, 15:31 UTC. SecurityWeek. Cyberattacks on Minnesota Water Systems Investigated as Officials Warn About Iranian Hackers.
  • Sun 2 Aug, 09:01 UTC. Security Affairs. CISA urges removal of online PLCs after Minnesota water attacks.
  • Mon 3 Aug, 09:11 UTC. SecurityWeek. Iranian hackers hit water plants in seven states, safety assured.
  • Tue 11 Aug, 18:56 UTC. DataBreaches, its first report on the story. Judge Approves Data Rules for Change Healthcare Breach Deal.
  • No CVE
  • Larger: an outlet’s first report
  • Coverage over time
  • Quiet time, folded
Show all 9 articles as a list
  1. Wed 29 JulDay 03
    1. Dozens of Minnesota Water Utilities Targeted in Coordinated OT Attacks08:12 · SecurityWeek · First report · This article, 1st of 9
    2. Cyberattack hits Minnesota water systems, one plant taken offline14:40 · The Hacker News
    3. Hackers Strike Minnesota Water Utilities, One Plant Briefly Offline19:50 · Security Affairs
  2. Thu 30 JulDay 12
    1. Minnesota Water Utility Attacks Expose Sector's Cyber-Risks22:02 · Dark Reading
    2. CISA urges utilities to secure PLCs after Minnesota attack22:31 · SecurityWeek
  3. Fri 31 JulDay 21
    1. Cyberattacks on Minnesota Water Systems Investigated as Officials Warn About Iranian Hackers15:31 · SecurityWeek

  4. Quiet for 2 days

    Sun 2 AugDay 41
    1. CISA urges removal of online PLCs after Minnesota water attacks09:01 · Security Affairs
  5. Mon 3 AugDay 51
    1. Iranian hackers hit water plants in seven states, safety assured09:11 · SecurityWeek

  6. Quiet for 8 days

    Tue 11 AugDay 131
    1. Judge Approves Data Rules for Change Healthcare Breach Deal18:56 · DataBreaches · Picked up again

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