Facebook's Sandberg says other cases of data misuse possible

Facebook was aware more than two years ago of Cambridge Analytica's harvesting of the personal profiles of up to 87 million users and cannot rule out other cases of abuse of user data, chief operating officer Sheryl Sandberg said."We know that we did not do enough to protect people's data," Sandberg told NPR."But the bigger (question) is, 'Should we have taken these steps years ago anyway?'" Sandberg said.