Did Iran hack water systems in seven US states?

Many were surprised last week when the US state of Minnesota reported that more than 30 of its state water systems had faced a "co-ordinated cyber-attack". Days later the FBI warned cyber-attacks had been reported in seven states and "some of that activity degraded water operations". The US Cybersecurity and Infrastructure Security Agency (Cisa) is reportedly probing a possible Iranian connection to the Minnesota attacks, according to US media. Cisa would not comment. Although US President Donald Trump has not blamed Iran, cyber-experts tell the BBC it's likely the attack was directed by Tehran.

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