WaterISAC Navigation
  • About
  • Report Incident
  • Contact Us
  • Become a Member
  • NRWA Signup
  • WaterISAC Champions
  • About
  • Report Incident
  • Contact Us
  • Become a Member
  • NRWA Signup
  • WaterISAC Champions
Home Posts Colorado Rural Electric Cooperative Suffers Ransomware Attack
Become a Member

Log in

  • Upcoming Events
  • Resource Center
  • Tools
  • Webcasts
  • Contaminant Databases
  • Community Partners
  • About
  • Log in

  • My Account

  • Logout

  • Report Incident
  • Contact Us
  • NRWA Signup
  • WaterISAC Champions
More Resources

Colorado Rural Electric Cooperative Suffers Ransomware Attack

Author: Alec Davison

Created: Tuesday, December 7, 2021 - 18:32

Categories: Cybersecurity

A small electric cooperative was the apparent victim of a ransomware attack that caused significant disruption and damage last month. On November 7, Delta-Montrose Electric Association (DMEA) discovered a breach on its internal enterprise network. As a result of the attack, the utility lost 90 percent of its enterprise network functions and large amounts of data, including saved documents and spreadsheets. The power grid and fiber optic network, including internet services managed by the utility were reportedly not affected. Additionally, the utility believes that no personal employee or customer information was compromised. As of November 29, the utility was still working on restoring its systems, indicating the attack’s apparent disruptive impact. This incident underscores the best practice of staying resilient against ransomware by maintaining multiple offline back-ups of your organization’s data. Read more at SecurityWeek.

Related Resources

Members Only

(TLP:AMBER) New IOCs (Stryker) and Malware Analysis Report (F5 BIG-IP)

Jun 5, 2026 in Cybersecurity, Federal & State Resources, Security Preparedness

(TLP:CLEAR) EPA to Conduct 2026 National Cyber Drill Focused on Operating Without Telecommunications and Internet Connectivity

Jun 4, 2026 in Cybersecurity, Federal & State Resources, Security Preparedness

(TLP:CLEAR) CISA and Partners Urge Hardening Automatic Tank Gauge Systems

Jun 4, 2026 in Cybersecurity, Federal & State Resources, OT-ICS Security

Become a Member
FAQs
About
Report Incident

Terms & Conditions
Privacy Policy
AI Policy
Contact Us

LinkedIn

1250 I Street NW, Suite 350
Washington, DC 20005
1-866-H2O-ISAC (1-866-426-4722)
© 2026 WaterISAC. All Rights Reserved.

Toggle the Widgetbar