Original release date: February 11, 2021In response to recent events where unidentified cyber actors obtained unauthorized access to the supervisory control and data acquisition (SCADA) system at a U.S. drinking water treatment facility, CISA, the Federal Bureau of Investigation, the Environmental Protection Agency, and the Multi-State Information Sharing and Analysis Center have released joint Cybersecurity Advisory AA21-042A: Compromise of U.S. Water Treatment Facility. This advisory outlines how cyber criminals exploit desktop sharing software and end-of-life operating systems to gain unauthorized access to systems.

This product is provided subject to this Notification and this Privacy & Use policy.Original release date: February 11, 2021

In response to recent events where unidentified cyber actors obtained unauthorized access to the supervisory control and data acquisition (SCADA) system at a U.S. drinking water treatment facility, CISA, the Federal Bureau of Investigation, the Environmental Protection Agency, and the Multi-State Information Sharing and Analysis Center have released joint Cybersecurity Advisory AA21-042A: Compromise of U.S. Water Treatment Facility. This advisory outlines how cyber criminals exploit desktop sharing software and end-of-life operating systems to gain unauthorized access to systems.