In Push for 2020 Election Security, Top Official Was Warned: Don’t Tell Trump

“You look at what Russia did — you know, buying some Facebook ads to try to sow dissent and do it — and it’s a terrible thing,” Jared Kushner, the president’s son-in-law and senior adviser, said on Tuesday during an interview at the Time 100 Summit in New York.

“But I think the investigations, and all of the speculation that’s happened for the last two years, has had a much harsher impact on our democracy than a couple of Facebook ads,” he said.

Before she resigned under pressure on April 7, Ms. Nielsen and other officials looked for other ways to raise the alarm.

The opening page of the Worldwide Threat Assessment, a public document compiled by government intelligence agencies that was delivered to Congress in late January, warned that “the threat landscape could look very different in 2020 and future elections.”

“Russia’s social media efforts will continue to focus on aggravating social and racial tensions, undermining trust in authorities and criticizing perceived anti-Russia politicians,” the report noted. It also predicted that “Moscow may employ additional influence tool kits — such as spreading disinformation, conducting hack-and-leak operations or manipulating data — in a more targeted fashion to influence U.S. policy, actions and elections.”

By comparison, cyberthreats have taken a back seat among security priorities at the White House.

Mr. Trump’s national security adviser, John R. Bolton, eliminated the position of cybersecurity coordinator at the White House last year, leaving junior aides to deal with the issue. In January, Ms. Nielsen fumed when 45 percent of her cyberdefense work force was furloughed during the government shutdown.

Ms. Nielsen grew so frustrated with White House reluctance to convene top-level officials to come up with a governmentwide strategy that she twice pulled together her own meetings of cabinet secretaries and agency heads. They included top Justice Department, F.B.I. and intelligence officials to chart a path forward, many of whom later periodically issued public warnings about indicators that Russia was both looking for new ways to interfere and experimenting with techniques in Ukraine and Europe.