Sen. Mark Warner Mark Robert WarnerIntelligence chief says Congress will get some in-person election security briefings Overnight Defense: Trump hosts Israel, UAE, Bahrain for historic signing l Air Force reveals it secretly built and flew new fighter jet l Coronavirus creates delay in Pentagon research for alternative to 'forever chemicals' House approves bill to secure internet-connected federal devices against cyber threats MORE (Va.), the top Democrat on the Senate Intelligence Committee, is concerned that YouTube’s recommendation algorithm could be manipulated by foreign governments.

“Companies like YouTube have immense power and influence in shaping the media and content that users see,” Warner told The Guardian on Monday. “I’ve been increasingly concerned that the recommendation engine algorithms behind platforms like YouTube are, at best, intrinsically flawed in optimizing for outrageous, salacious, and often fraudulent content.”

“At worst, they can be highly susceptible to gaming and manipulation by bad actors, including foreign intelligence entities,” he noted.

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Warner’s criticism follows a Guardian investigation that found that YouTube’s ad algorithm had consistently pushed anti-Hillary Clinton Hillary Diane Rodham ClintonHillicon Valley: FBI chief says Russia is trying to interfere in election to undermine Biden | Treasury Dept. sanctions Iranian government-backed hackers The Hill's Campaign Report: Arizona shifts towards Biden | Biden prepares for drive-in town hall | New Biden ad targets Latino voters FBI chief says Russia is trying to interfere in election to undermine Biden MORE conspiracy videos around the time of the 2016 presidential election in its automated video recommendations.

The newspaper’s analysis found that the video streaming platform was six times as likely to push anti-Clinton content than it was for Donald Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE.

YouTube has challenged the Guardian’s research, saying that it “strongly disagreed” with the outlet’s findings.

“It appears as if the Guardian is attempting to shoehorn research, data and their conclusions into a common narrative about the role of technology in last year’s election,” a YouTube spokesperson told the outlet. “The reality of how our systems work, however, simply doesn’t support this premise.”

Google, which owns the online video platform, has consistently downplayed the presence of Russian-led influence efforts on its platform, compared to such campaigns on Twitter and Facebook.

“We believe that the activity we found was limited because of various safeguards that we had in place in advance of the 2016 election, and the fact that Google’s products didn’t lend themselves to the kind of micro-targeting or viral dissemination that these actors seemed to prefer,”said Google general counsel Kent Walker during the Nov. 1 Senate Intelligence Committee hearing about Russian meddling in the 2016 presidential election.