Sheryl Sandberg: Facebook knew about Cambridge Analytica 2 1/2 years ago but didn't follow up

Sheryl Sandberg: Facebook knew about Cambridge Analytica 2 1/2 years ago but didn't follow up  Business Insider Myanmar Groups Say Facebook Hasn't Controlled Hate Speech  U.S. News & World Report Facebook Admits Mark Zuckerberg and Top Execs Have Deleted Their Sent Messages Remotely  Gizmodo Mark Zuckerberg on Facebook's hardest year, and what comes next  Vox Facebook finally steps up on privacy. Now it's Congress's turn  Los Angeles TimesFull coverage