Did Facebook know about “View As” bug before 2018 breach? – Naked Security


A recent court filing indicates that Facebook knew about the bug in its View As feature that led to the 2018 data breach – a breach that would turn out to affect nearly 29 million accounts – and that it protected its employees from repercussions of that bug, but that it didn’t bother to warn users.

There was a class action lawsuit – Carla Echavarria and Derrick Walker v. Facebook, Inc.filed within hours of Facebook’s revelations last September that attackers had exploited a vulnerability in its “View As” feature to steal access tokens: the keys that allow you to stay logged into Facebook so you don’t need to re-enter your password every time you use the app.

Reuters reports that the lawsuit in question actually combined several legal actions, presumably including the one filed on the same day as Facebook disclosed the breach.