“While senior Trump administration officials said this week that Iran has been actively interfering in the presidential election, many intelligence officials said they remained far more concerned about Russia, which has in recent days hacked into state and local computer networks in breaches that could allow Moscow broader access to American voting infrastructure.”
“There is no evidence that the Russians have changed any vote tallies or voter registration information, officials said. They added that the Russian-backed hackers had penetrated the computer networks without taking further action, as they did in 2016. But American officials expect that if the presidential race is not called on election night, Russian groups could use their knowledge of local computer systems to deface websites, release nonpublic information or take similar steps that could sow chaos and doubts about the integrity of the results, according to American officials briefed on the intelligence” – New York Times.