Minnesota state, local and federal officials responded to “malicious cyber activity targeting technology at more than 30 community water systems across Minnesota,” Minnesota IT Services announced Thursday. Michigan on Saturday reported cyberattacks on nine of the state’s water systems but said all were working safely, multiple news outlets reported. “These threat actors are targeting water entities of all sizes,” it said in a July 30 alert. Water systems are particularly vulnerable to cyberattacks because the sector is so fragmented, Sean Tufts, field chief technology officer, industrial, for cybersecurity firm Claroty, said in an email. “Minnesota has fewer than 100 electric utilities, but more than 1,000 water systems supporting roughly five million residents.