Cambridge Analytica

Facebook's CEO apologized for the Cambridge Analytica scandal with ads in multiple U.S. and British newspapers Sunday, saying the social media platform doesn't deserve to hold personal information if it can't protect it.

The whistleblower at the center of allegations that a U.K.-based company improperly used the personal data of some 50 million Facebook users to help Donald Trump win the 2016 presidential election has expressed regret for having taken part in the project.