https://www.reuters.com/article/us-facebook-cambridge-analytica/zuckerberg-says-facebook-made-mistakes-on-user-data-vows-curbs-idUSKBN1GX0OG

Facebook Inc Chief Executive Mark Zuckerberg said on Wednesday that his company made mistakes in how it handled data belonging to 50 million of its users and promised tougher steps to restrict developers' access to such information.