Foreign Hackers Target Two Colorado Water Utilities

Hackers targeted two Colorado water utilities, changing OT settings and disabling alarms, but causing no impact on water services or safety.

Foreign hackers targeted the operational technology (OT) systems of two small private water utilities in Colorado in late August, apparently trying to disrupt operations. Local authorities haven’t identified the affected utilities or the attackers.

Attackers reportedly changed equipment settings, disabled remote access and alarms, and modified pumping cycles. The incidents were brief and did not affect water services or public safety. The utilities serve fewer than 200 people, and few technical details are available.

The Colorado governor added the attack was carried out by ‘foreign actors’.

“The intrusions did not affect drinking water quality or treatment processes, according to Colorado Gov. Jared Polis’ office.