https://www.reuters.com/article/us-facebook-privacy-testimony/ceo-zuckerberg-says-facebook-could-have-done-more-to-prevent-misuse-idUSKBN1HG2EY >Facebook Inc Chief Executive Mark Zuckerberg told Congress on Monday that the social media network should have done more to prevent itself and its members' data being misused and offered a broad apology to lawmakers.