It's been all-hands-on-deck for election security officials ahead of Tuesday's election. A U.S. official says U.S. Cyber Command is expanding its operations to try and identify Russian, Iranian, and Chinese hackers.
Officials believe those countries want to influence this year's election results.
According to a top cyber official Russia has recently engaged in some broad cyber activities while Iran has been conducting targeted disinformation efforts.
Officials are confident that vote counting and certification systems are secure but they're still on high alert.