The network was in the early stages of building audiences and was operated by local nationals,some wittingly and some unwittingly,Facebook said.
The Russian improvements make it harder for voters and social media platforms to identify the foreign interference,Kim said.
Sanders responded immediately to the report:"My message to Putin is clear:Stay out of American elections,and as president I will make sure that you do."
The disclosure angered Trump,who complained the Democrats would use the information against him.
Assange's lawyers will describe how GOP Representative Dana Rohrabacher had visited the Australian in the Ecuadorian embassy to offer him a deal in 2017.
Australian MPs said there was a fundamental problem with a British court being allowed to determine whether an Australian should be extradited to America.
The episode showcased the perils of conducting elections in the age of social media,where volume is more important than veracity.
The attacks entangle Moscow in domestic US politics yet again and show Russian spies were trying to hack the same company Trump wanted Ukraine to probe.
The use of AI to trick unsuspecting users and create people who do not exist marked a major,troubling new development,researchers said.
Andrew McCabe,then the FBI's deputy director,said that Downer's information was the"tipping point"that led the FBI to open the investigation.
The prospect that his reelection campaign could lose access to some Facebook mictrotargeting tools appears to be vexing his team.