Sara Fischer, media reporter at Axios, and Michael Nunez, deputy tech editor at Mashable, discuss the scrutiny surrounding Facebook as CEO Mark Zuckerberg prepares to testify on Capitol Hill. We also talk COO Sheryl Sandberg's comments to NBC News where she said the company knew about the Cambridge Analytica data misuse two and a half years ago but failed to audit the information any further after the company claimed to have deleted the data.