https://www.reuters.com/article/us-facebook-moves-chriscox/facebook-product-chief-cox-to-exit-as-focus-shifts-to-messaging-idUSKCN1QV313

Facebook Inc's chief product officer and one of its earliest employees, Chris Cox, said on Thursday he is leaving the company, just days after Chief Executive Officer Mark Zuckerberg revealed a plan to pivot the world's biggest social network to an encryption-focused messaging company.