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The CEO of Facebook testified before Congress for the first time on Tuesday. He apologized for allowing Facebook tools to be used to do harm — and vowed to take more responsibility over user content.

Facebook CEO Mark Zuckerberg will testify before the Senate judiciary and commerce committees on Tuesday and the House Energy and Commerce Committee on Wednesday.

"Across the board, we have a responsibility to not just build tools, but to make sure those tools are used for good," the founder and CEO of Facebook will say in his prepared remarks to the House.

As the company prepares to notify 87 million users whose data was misused by Cambridge Analytica, CNBC reports that Facebook is suspending Cubeyou over similar allegations.

Facebook now says Cambridge Analytica could have improperly accessed up to 87 million Facebook users. CEO Mark Zuckerberg said Wednesday the social media giant made "a huge mistake"

He will answer to Senate and House committees on the company's failure to protect users' personal data.

Kentucky's Republican governor has won an initial round in his court fight over whether he violated free-speech rights by blocking people from his…

Facebook's stock has plunged 18 percent, and companies with large followings on the site are threatening the social media platform's ad revenue by deleting their official pages.

The agency will look at whether the social network violated a 2011 consent decree when users' data was revealed to political strategists.

You might be asking this question after revelations that personal data were used by a firm tied to the Trump campaign. A privacy advocate says "you'd be spending your day full time" dealing with it.