Michigan on Saturday joined Minnesota in reporting cyberattacks on nine of the state's water systems but an official said all systems were operating ''safely.'' Earlier this week, authorities said cyberattacks targeted over 30 water systems in Minnesota. The reports in Michigan surfaced after the state received a federal cyber alert Tuesday about attempts to tamper with operational technology at water systems. Iran's interest in the operations of water systems inside the U.S. dates back years. The state agency said most of the confirmed attacks involved technology that water systems use to remotely monitor and control equipment.