09/28 Facebook Advisory
<Start> Facebook Newsroom September 28, 2018 S ecurity Update Security Update Additional Technical Details Morning Press Call Transcript Afternoon Press Call Transcript Originally published on September 28, 2018 at 9:41AM PT Security Update By Guy Rosen , VP of Product Management On the afternoon of Tuesday, September 25, our engineering team discovered a security issue affecting almost 50 million accounts. We’re taking this incredibly seriously and wanted to let everyone know what’s happened and the immediate action we’ve taken to protect people’s security. Our investigation is still in its early stages. But it’s clear that attackers exploited a vulnerability in Facebook’s code that impacted “ View As ” a feature that lets people see what their own profile looks like to someone else. This allowed them to steal Facebook access tokens which they could then use to take over people’s accounts. Access tokens are the equivalent of digital key