now. >> it was very frustrating for me. i started losing sleep because, i mean, i should not have been put in this position, and frankly i was the wrong person for this position. i am not charismatic. i am not good at attracting or receiving attention. i'm an introvert who wants to stay at home and pet my cats. >> reporter: repressive governments around the world using facebook to achieve influence and control. >> if anyone is an expert on public relations, on what is effective for driving attention, it is dictators of those countries. the fact that multiple national governments and presidents felt the need to exploit facebook on mass scales, to manipulate their own citizenry without even trying to hide, that speaks volumes about how important they believed it to be, how important it actually is. >> reporter: some of her findings led to facebook