Facebook founder and CEO Mark Zuckerberg told CNN on Wednesday he's "really sorry" about a data breach that affected an estimated 50 million Facebook users, acknowledging that the company has "a basic responsibility" to protect information. "We have a basic responsibility to protect people's data and if we can't do that then we don't deserve to have the opportunity to serve people," says Facebook CEO Mark Zuckerberg https://t.co/kmMO3jnLxl pic.twitter.com/nqv0QxLXhg — CNN (@CNN) March 22, 2018 The company is under scrutiny following the revelation that a data scientist created a personality quiz that was taken by millions of Facebook users, and their personal information was then secretly passed along to the data analytics firm Cambridge Analytica.