Cambridge Analytica whistleblower Christopher Wylie told Congress on Wednesday that the firm used by President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE's campaign in 2016 engaged in "voter disengagement" tactics targeting black Americans.

In an interview with CNN after his testimony, Wylie said that Bannon, who held a position on the firm's board before joining the Trump campaign, directed the firm to research suppressing the vote among black Americans.

Other liberal demographic groups were also targeted, Wylie said.

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"Mr. Bannon sees cultural warfare as the means to create enduring change in American politics. It was for this reason Mr. Bannon engaged SCL [Cambridge Analytica's parent company], a foreign military contractor, to build an arsenal of informational weapons he could deploy on the American population," Wylie said Wednesday.

That information is then used to "discourage or demobilize certain types of people from voting," he added, including African-Americans, which Wylie says were particular targets of the operations.

During the hearing before the Senate Intelligence Committee, Wylie was asked by Sen. Christopher Coons Christopher (Chris) Andrew CoonsMurkowski: Supreme Court nominee should not be taken up before election Battle lines drawn on precedent in Supreme Court fight Sunday shows - Ruth Bader Ginsburg's death dominates MORE (D-Del.) whether Bannon's goal "was to suppress voting or discourage certain individuals in the U.S. from voting."

"That was my understanding, yes," Wylie replied.

Wylie made headlines earlier this year when he revealed that as many as 87 million people may have had their data harvested by Cambridge Analytica without their consent as a result of a third-party application.

The resulting press was devastating for Facebook and led to CEO Mark Zuckerberg Mark Elliot ZuckerbergHillicon Valley: FBI, DHS warn that foreign hackers will likely spread disinformation around election results | Social media platforms put muscle into National Voter Registration Day | Trump to meet with Republican state officials on tech liability shield Facebook to 'restrict the circulation of content' if chaos results from election: report 2.5 million US users register to vote using Facebook, Instagram, Messenger MORE's testimony on Capitol Hill. In early May, the data firm announced it was shutting down over the media coverage.