https://www.theguardian.com/technology/2020/jul/26/yael-eisenstat-facebook-is-ripe-for-manipulation-and-viral-misinformation > The ex-CIA officer on why she lasted only six months at the tech giant and her fears about its role in the forthcoming US election > Yaël Eisenstat was a CIA officer for 13 years and a national security adviser to vice president Joe Biden. Between June and November 2018, she was Facebook’s global head of elections integrity operations, business integrity.