The cyber attack that tried to poison the drinking water system in Oldsmar, Florida is similar to last year’s attack on small water systems in Israel. The only way to prevent these attacks is for the utilities themselves to deploy and use effective cyber defenses. Small water systems must act now to protect themselves and their consumers, says Waterfall. When compromised, small systems can easily sicken hundreds and kill dozens or more citizens in affected communities, authors say. The good news is that robust protection for small systems does not need to be expensive.
Source: https://www.helpnetsecurity.com/2021/02/09/misplaced-expectations-securing-water-treatment-systems/