"I think the last person Russia wants to see in office is Donald Trump because nobody has been tougher on Russia than I have — ever," he said.
But the president seemed to agree with the intelligence indicating China didn't want to see him re-elected.
"If Joe Biden was president, China would own our country," he said.
Evanina's statement, three months before the election, comes amid criticism from House Speaker Nancy Pelosi and other congressional Democrats that the intelligence community has been withholding from the public specific intelligence information about the threat of foreign interference in American politics.
"The facts are chilling," Senator Richard Blumenthal (Democrat-Connecticut) wrote in an op-ed published Friday evening in The Washington Post.
"I believe the American public needs and deserves to know them. The information should be declassified immediately."
The latest intelligence assessment reflects concerns not only about Russia but China and Iran as well, warning that hostile foreign actors may seek to compromise election infrastructure, interfere with the voting process or call into question voting results.
Despite those efforts, officials see it as unlikely that anyone could manipulate voting results in any meaningful way, Evanina said.
"Many foreign actors have a preference for who wins the election, which they express through a range of overt and private statements; covert influence efforts are rarer," said Evanina, director of the National Counterintelligence Security Centre.
"We are primarily concerned about the ongoing and potential activity by China, Russia and Iran."
Concerns about election interference are especially acute following a wide-ranging effort by Russia to meddle in the 2016 election on Trump's behalf through both the hacking of Democratic emails and a covert social media campaign aimed at sowing discord among US voters. Trump has routinely resisted the idea that the Kremlin favoured him in 2016, but the intelligence assessment released Friday indicates that unnamed Kremlin-linked actors are again working to boost his candidacy on social media and Russian television.
The White House responded to Friday's news with a statement saying: "The United States will not tolerate foreign interference in our electoral processes and will respond to malicious foreign threats that target our democratic institutions."
Tony Blinken, a senior adviser to Biden's campaign, responded Friday that Trump "has publicly and repeatedly invited, emboldened, and even tried to coerce foreign interference in American elections. ... Joe Biden, on the other hand, has led the fight against foreign interference for years".
Pelosi and Intelligence Committee chairman Adam Schiff, both California Democrats, said in a statement Friday that they were "pleased that Mr Evanina heeded our call to make additional details public about Russia's malign interference campaign".
But they also criticised him for naming Iran and China "as equal threats to our democratic elections".
Democrats in Congress who have participated in recent classified briefings on the election interference threat have expressed alarm at what they have heard. They have urged the US intelligence community to make public some of their concerns, in part to avoid a repeat of 2016, when Obama administration officials were seen as slow and overly deliberate in their public discussion of active Russian measures in that year's election.
When it comes to Russia this year, US intelligence officials assess that it is working to "denigrate" Biden and what it sees as an anti-Russia "establishment" among his supporters, Evanina said. US officials believe that tracks Moscow's criticism of Biden when he was vice president for his role in Ukraine policies and his support of opposition to Putin inside Russia.
The US statement called out by name Andriy Derkach, a pro-Russia Ukrainian lawmaker who has been active in levelling unsubstantiated corruption allegations against Biden and his son concerning Burisma, the Ukrainian natural gas company on whose board Hunter Biden sat. That effort has included publicising leaked phone calls.
Democrats, including members of the Senate intelligence panel, have voiced concerns that an ongoing Republican probe into Hunter Biden and his work in Ukraine would parallel Russian efforts and amplify Russian disinformation. That investigation is being led by Senator Ron Johnson of Wisconsin, the chairman of Senate Homeland Security and Governmental Affairs Committee. He has denied any wrongdoing.
Though US officials allege that China has its own preference, the statement Friday did not directly accuse Beijing of election interference or taking action to prop up Biden.
Instead, the statement said, China views Trump as "unpredictable" and does not want to see him win re-election, Evanina said.
China has been expanding its influence efforts ahead of the November election in an effort to shape US policy and pressure political figures it sees as against Beijing. The Trump administration's relationship with China has taken a starkly more adversarial tone, including the closure last month of Beijing's consulate in Houston and an executive order Thursday that banned dealings with the Chinese owners of consumer apps TikTok and WeChat.
"Although China will continue to weigh the risks and benefits of aggressive action, its public rhetoric over the past few months has grown increasingly critical of the current administration's Covid-19 response, closure of China's Houston consulate and actions on other issues," Evanina wrote.
On Iran, the assessment said Tehran seeks to undermine US democratic institutions as well as Trump and divide America before the election.
"Iran's efforts along these lines probably will focus on online influence, such as spreading disinformation on social media and recirculating anti-US content," Evanina wrote.
"Tehran's motivation to conduct such activities is, in part, driven by a perception that President Trump's re-election would result in a continuation of US pressure on Iran in an effort to foment regime change."
During a panel discussion later Friday at the DEF CON hacker convention, federal cybersecurity officials were asked which foreign threat they considered most serious.
"I don't think I would say one is scarier than the other per se. Certainly some of these adversaries are a little bit more experienced," said the National Security Agency's election lead, David Imbordino.
"I couldn't agree more," said Cynthia Kaiser, the FBI's deputy chief of analysis for national cyber threats.
"If you ask me what the biggest threat is, it's the kind of constant drumbeat or influence campaigns that are going to make people feel like they are less confident in our [elections] system."
- AP
