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  • Donie O'Sullivan
    CNN Correspondent

    Donie O'Sullivan is a CNN correspondent covering the intersection of politics and technology.

    Full Bio

    Another Facebook whistleblower says she is willing to testify before Congress

    Former Facebook employee speaks to CNN

    Facebook whistleblower, Frances Haugen appears before the Senate Commerce, Science, and Transportation Subcommittee during a hearing entitled 'Protecting Kids Online: Testimony from a Facebook Whistleblower' at the Russell Senate Office Building on October 05, 2021 in Washington, DC.

    Facebook whistleblower to talk to January 6 committee

    Facebook CEO Mark Zuckerberg walks to meetings for technology regulations and social media issues on September 19, 2019, in Capitol Hill, Washington, DC.

    Analysis: Zuckerberg tries to hit hard at the whistleblower, but nothing lands

    Facebook CEO Mark Zuckerberg speaks during the annual F8 summit at the San Jose McEnery Convention Center in San Jose, California on May 1, 2018. (Photo by Josh Edelson/AFP/Getty Images)

    Zuckerberg's 'most laughable claim': O'Sullivan reacts to Facebook founder's statement

    Instagram promoted pages glorifying eating disorders to teen accounts

    See how Instagram promoted pages glorifying eating disorders to teen accounts