Municipal water systems in several states have been targeted by hackers, prompting a warning from the FBI and the Environmental Protection Agency. The agencies have reported incidents in at least seven states, with some malicious activity affecting water operations. The warning was issued in a public service announcement, although the states affected were not named.

This comes after a similar incident in Minnesota, where over 30 municipal water facilities were targeted. The incident is still under investigation. Further details about the cyberattacks and the warning can be found through the FBI and Environmental Protection Agency's public service announcement, available from sources such as NBC Los Angeles.