Foreign Hackers Target Two Colorado Water Utilities
Foreign hackers briefly altered OT settings at two small Colorado water utilities without disrupting service.
Foreign attackers accessed operational technology at two small private Colorado water utilities in late August 2026, changing equipment settings, disabling remote access and alarms, and altering pumping cycles. Governor Jared Polis's office said the brief intrusions did not affect drinking water quality, treatment, or public safety; the utilities serve fewer than 200 people and were not named. Officials cited an Iranian-backed effort against U.S. water systems but said they could not confirm which actors were involved or a link to July incidents that hit exposed PLCs in at least a dozen states. In those earlier cases, attackers changed PLC addresses and passwords and sometimes disabled shutdown processes.