Facebook Stored Hundreds of Millions of User Passwords in Plain Text for Years

The Facebook source said the investigation so far indicates between 200 million and 600 million Facebook users may have had their account passwords stored in plain text and searchable by more than 20,000 Facebook employees.

A written statement from Facebook provided to KrebsOnSecurity says the company expects to notify “hundreds of millions of Facebook Lite users, tens of millions of other Facebook users, and tens of thousands of Instagram users.”