The US govt has stated that Iran is behind threatening emails sent to Democratic voters warning that they must vote for President Trump or face consequences. Voters registered as Democrats in Florida and Alaska have received voter intimidation emails claiming to be from the far-right group known as the Proud Boys. Some of the emails being sent include the recipient’s full name and mailing address, alluding that the information was obtained through hacked voter registration sites. The Department of Homeland Security has recently warned state and local election officials of security holes in election system websites.
Source: https://www.bleepingcomputer.com/news/government/us-govt-iran-behind-fake-proud-boys-voter-intimidation-emails/