In Georgia, a database that verifies voter signatures was locked up by Russian hackers in a ransomware attack that also dumped voters’ registration data online.
In California and Indiana, Russia’s most formidable state hackers, a unit linked to the Federal Security Service, or F.S.B., bored into local networks and hit some election systems, though it is still unclear why.
In Louisiana, the National Guard was called in to stop cyberattacks aimed at small government offices that employed tools previously seen only in attacks by North Korea.
And on Tuesday night, someone hacked the Trump…
