that would be sandy parakilas, who is now the chief strategy officer for an organization seeking moreology. also with us, sarah frier, who covers facebook. sandy, thank you for joining us, you are just back from brussels. you call this a disaster. there are many thousands of facebook employees not saying anything, what compelled you just to speak out? sandy: i've seen the tremendous amount of harm that is being done around the world as a result of some of these business practices, things like the impact on elections, not just in the u.s. but brexit. some of the violence that has taken place in sri lanka and other places. seeing that, it drove me to want to come forward and to call out some of the business practices i think led to the situation. emily: you were a platform operations manager, in part responsible for policing data breaches, so that give you unique insight into policies and how facebook approached these things. at the time, what kinds of things did you see that troubled you? sandy: i left the company six years ago, though it has been sometime. what troubled me was the gen

emily: all right, sandy parakilas, thank you for joining us, as well as our own sarah frier. the 00 cyril samberg addressed this year's -- sheryl sandberg, addressed this year's m.i.t. graduating class, and pushed technology as a force for good it could be misused by malicious actors and reaffirm to owningk's commitment to their mistakes. you're on your mistakes, you can work harder to correct them and to prevent the next one. that is my job now. it will not be easy or fast, the we will see it through. emily: coming up, exposing the lie behind what was one of silicon valley's hottest startups. the man who blew the whistle, next. this is bloomberg. ♪ ♪ emily: it was supposed to be the silicon valley startup that would revolutionize the medical industry, making its investors very rich. with just a pinprick of the blood, theranos was heralded as a lifesaver that would diagnose diseases requiring more complex tests. there was one problem, a big one, it was a lie. it had a peek l.a. ration of $9 akllion and was headed -- pe valuation of $9 billion and had a charismatic leader. a w