Loading story…
Foreign actors breached the operational technology and industrial control systems of two unnamed, privately owned Colorado water utilities in late August. Each utility serves fewer than 200 people. The intruders changed equipment settings, disabled remote access and alarms, and altered pumping cycles; disruption was brief, with no reported interruption to water service or impact on public safety.
Colorado officials did not identify the perpetrators, the affected utilities, or the initial access method. They said they were aware of a broader Iranian-backed campaign targeting U.S. drinking-water and wastewater systems but did not attribute the Colorado intrusions to it. The incidents follow July attacks against roughly 100 internet-exposed water systems across at least seven states, underscoring the exposure of small utilities' internet-accessible OT environments.
See affected versions and whether adversaries are exploiting it.
2 events from the most recent confirmed update back to the earliest known activity.
Foreign actors targeted the operational technology and industrial-control systems of two unnamed privately owned Colorado water utilities, each serving fewer than 200 people. The intruders changed equipment settings, disabled remote access and alarms, and altered pumping cycles; disruption was brief, with no water-service interruption or public-safety impact reported.
Cyberattacks targeted approximately 100 internet-exposed U.S. water systems. Confirmed victims were located in Minnesota, Michigan, Georgia, South Dakota, New Jersey, Wisconsin, and Alabama; federal authorities had not released a complete victim list.
Vulnerabilities, threat actors, malware, products, organizations, and breaches Mallory has linked to this story.
See whether adversaries are exploiting this yet, and where the affected versions run in your environment.
2 references tracked. Mallory keeps watching after this page renders.
Map indicators from this story to your assets and identify affected systems in minutes.
Every observed campaign, victim, and pivot linked to actors named in this story.
Malware, exploits, and IOCs connected to the activity described here.
YARA, Sigma, and Snort rules deployed to your SIEM as soon as they’re published.
Get matching new stories delivered to your team as they break — not the next morning.
Ask questions about this story and take action on the answers.
Other stories Mallory is tracking that overlap on entities, sources, or topic labels.
Water and wastewater utilities across at least seven U.S. states reported cyberattacks targeting industrial control systems, with Minnesota, Michigan, and Georgia among the states disclosing incidents and Minnesota saying more than 30 community water systems were hit during July 26-27. Officials said some utilities switched to manual operations, and the FBI warned that some activity degraded water operations, although states reporting publicly said impacts were limited and drinking water safety was not significantly disrupted. The attacks reportedly focused on older internet-connected operational technology, particularly **Rockwell Automation/Allen-Bradley PLCs**, while government guidance also warned that **Schneider Electric**, **Siemens**, and other PLC brands could be at risk. U.S. officials have not publicly attributed the campaign, but federal concern has centered on possible Iranian state-linked activity because the intrusions appeared disruptive rather than financially motivated. Reporting and prior threat intelligence have linked the activity to **CyberAv3ngers**, an IRGC-associated group previously tied to disruptive operations against water, manufacturing, and energy infrastructure, including the Municipal Water Authority of Aliquippa in Pennsylvania and water services in County Mayo, Ireland. OpenAI said it had earlier banned accounts assessed to belong to CyberAv3ngers after observing use of its models for reconnaissance, vulnerability research, code debugging, scripting help, and post-compromise tradecraft involving industrial control systems and PLC-related targets.
Aug 24, 2026
Hackers associated with China have gained unauthorized access to the IT networks of hundreds of small and medium-sized water utilities and other critical infrastructure providers across the United States. These intrusions are believed to be part of a broader strategy to position Chinese actors to sabotage American water and power supplies in the event of a geopolitical conflict, particularly if tensions escalate over Taiwan. U.S. officials have been aware of this threat for over two years, and recent reporting has brought renewed attention to the scale and persistence of these cyber operations. The targeted utilities are often located in rural areas and small towns, which typically lack the cybersecurity resources and expertise of larger metropolitan systems. The operational technology (OT) systems that control water treatment and distribution are especially vulnerable due to their increasing automation and remote accessibility. The risk is compounded by a significant resource gap, as many of these utilities struggle to defend against sophisticated nation-state threats. Efforts to bolster defenses have included the launch of two non-profit initiatives aimed at supporting critical infrastructure operators, but these programs face their own limitations. One of the non-profits has paused its activities to recalibrate its approach, while the other is only able to provide assistance in a limited number of states due to resource constraints. The threat underscores the broader challenge of protecting critical infrastructure in the United States, where many essential services are managed by small organizations with limited budgets. The potential for cyber sabotage of water and power systems raises concerns about the resilience of civilian infrastructure in the face of international conflict. U.S. government agencies have issued warnings and guidance to utilities, but implementation of robust security measures remains inconsistent. The situation highlights the need for increased investment in cybersecurity for critical infrastructure, particularly in rural and underserved areas. The ongoing threat from Chinese-linked hackers demonstrates the strategic importance of water and power utilities as potential targets in modern cyber warfare. The exposure of these vulnerabilities has prompted calls for greater public-private collaboration and federal support. The risk is not limited to water utilities, as other sectors of critical infrastructure may face similar threats from state-sponsored actors. The revelations serve as a wake-up call for the urgent need to address cybersecurity gaps in essential services. The possibility of coordinated attacks on infrastructure during a geopolitical crisis could have far-reaching consequences for national security and public safety. The current state of preparedness among small utilities is insufficient to counter the scale and sophistication of the threat. The situation remains dynamic, with ongoing efforts to assess and mitigate the risks posed by foreign cyber actors.
Jul 12, 2026
Poland disclosed cyberattacks on five water treatment plants after intruders breached industrial control systems and, in some cases, gained the ability to change settings for pumps, alarms, and treatment equipment. Investigators said the compromises were enabled by basic security failures, including weak passwords and internet-exposed systems, and Polish authorities linked parts of the activity to Russian-aligned actors seeking to disrupt public services and probe infrastructure resilience. The incidents echo the earlier intrusion at a Florida water plant, where attackers reportedly exploited outdated software and poor password practices to gain access to operational systems. Together, the cases underscore a persistent risk across municipal water utilities: insecure remote access, exposed human-machine interfaces, aging control technology, and weak authentication can turn preventable weaknesses into threats to service continuity and public safety.
Jun 29, 2026