According to the FBI, at least seven states have now been targeted in a growing wave of cyberattacks on critical water infrastructure across the country. Federal officials now reportedly believe Iran is the likely culprit. Liz Landers discussed more with Cynthia Kaiser, a former deputy assistant director of the FBI’s cyber division currently at Halcyon. Amna Nawaz: Well, according to the FBI, at least seven states have now been targeted in a growing wave of cyberattacks on critical water infrastructure across the country. Federal officials are reportedly investigating Iran as the likely culprit. Liz Landers has the latest on this story. Liz Landers: Amna, the coordinated attacks follow urgent warnings issued last month by cybersecurity agencies who said Iran was actively targeting water and energy infrastructure nationwide. In Minnesota, officials said at least 30 municipal water systems were hit. Utilities providers across the country are now scrambling to beef up their security. For more, we're joined by Cynthia Kaiser. She is former deputy assistant director of the FBI's Cyber Division and a senior vice president at the cybersecurity company Halcyon. Cynthia, thank you for joining "News Hour." Cynthia Kaiser, Former FBI Cyber Deputy Director: Thank you for having me. Liz Landers: What do we know so far about these attacks? What kind of damage were they able to do and who is being targeted here? Cynthia Kaiser: Attackers have been breaking into the small computers that run America's water system. In a very small number of cases, there have been some disruptive actions. Now, FBI and EPA have reported that utilities in at least seven states have known incidents that are of similar kind of severity, which shows just how broad this issue really is. Liz Landers: So far, federal authorities have not linked this to any specific actor. Who