WaPo:

It’s official: The race to hack the 2020 general election is in full swing. 

Iran tried to hack into Gmail accounts used by President Trump’s reelection campaign staff, the leader of Google’s threat-hunting team revealed in a tweet. China, meanwhile, tried to hack staff for former vice president Joe Biden, the presumptive Democratic presidential nominee, Shane Huntley said. 

The hackers didn’t successfully breach those accounts. But these nation state-backed hacking campaigns are likely to be the just the beginning of a general election campaign that will be ripe for disruption by U.S. adversaries.