Secretary of Homeland Security Kirstjen Nielsen Kirstjen Michele NielsenMore than million in DHS contracts awarded to firm of acting secretary's wife: report DHS IG won't investigate after watchdog said Wolf, Cuccinelli appointments violated law Appeals court sides with Trump over drawdown of immigrant protections MORE on Thursday said she agreed "full stop" with the Obama-era intelligence assessment that Russia tried to interfere in the 2016 presidential election.

“I don’t think there is any doubt that they did it, and I think we should all be prepared — given that capability and will — that they’ll do it again,” she said while speaking at the Aspen Security Forum.

However, when pressed on the specific intelligence community judgment that Russia developed a preference for Trump, Nielsen initially said she had not seen any evidence that Russian hackers’ specific efforts to target state electoral systems was “to favor a particular political party.”

WATCH: "I don't think there's any question in the intel community or at DHS that Russians attempted to infiltrate and interfere with our electoral system ... I don't think there's any doubt that they did it," Sec. Nielsen says at the Aspen Security Forum. pic.twitter.com/NiRvbcCAz9 — MSNBC (@MSNBC) July 19, 2018

But Nielsen later seemed to clarify those remarks, saying that Russia’s influence efforts against the 2016 vote were to “attack certain political parties … more than others." She indicated, however, that Moscow’s ultimate goal was to sow discord among the American public.

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“I agree with the intel community's assessment full stop — any attack on democracy, which is what that was, whether it is successful or it is unsuccessful, is unacceptable," Nielsen said. “I absolutely believe their assessment."

Her remarks come in the wake of various conflicting statements made by President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE on Russian interference. During a press conference in Helsinki on Monday alongside Russian President Vladimir Putin, he cast doubt on the conclusions — but later walked back the remarks, saying he misspoke and that he accepts the intelligence community’s conclusions.

The unclassified intelligence community assessment released in January 2017 judged that Russia intervened in the presidential election “to undermine public faith in the US democratic process, denigrate Secretary Clinton, and harm her electability and potential presidency.”

“We further assess Putin and the Russian Government developed a clear preference for President-elect Trump,” the assessment states. "We also assess Putin and the Russian Government aspired to help President-elect Trump’s election chances when possible by discrediting Secretary Clinton and publicly contrasting her unfavorably to him.”

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During the summit on Monday, Putin himself said he wanted Trump to win the election.

On Thursday, Nielsen was asked by NBC news correspondent Peter Alexander to clarify remarks she made in May during which she said she had not seen the intelligence community’s specific judgment that Russia interfered in the election to help Trump.

“I think what we have seen on the foreign influence side is that they were attempting to intervene and cause chaos on both sides, whether its in Charlottesville — both sides — whether its in Syria — both sides,” Nielsen said.

“But for clarity, the intelligence community did have that finding, right?” Alexander pressed. “They’re finding was that it was in an effort to favor the president.”

“It was in an effort to attack certain political parties that we know about, right, more than others, and so I think we’ll continue to look and see what that means and be prepared for the next time,” Nielsen responded.

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Nielsen, echoing other top intelligence officials, was firm in her warning that Russia presents a potential threat to future elections. She also said it would be “foolish” to believe that Russia is not continuing to target the United States in influence operations.

“I think we would be foolish to think they’re not. They have the capability; they have the will. We have to be prepared,” Nielsen said.

Trump on Wednesday responded “no” when asked by a reporter if Russia is still meddling in U.S. political affairs. Later, the White House said he was saying “no” to taking questions, not responding to the direct inquiry.

Nielsen also rejected the notion that other nations could have been involved the 2016 interference effort, after Trump raised the prospect earlier this week.

"We have seen other nation-states involved in foreign influence," Nielsen said. "We have not seen other nations involved in the election meddling."