Facebook Inc. said it has fixed a glitch that exposed the passwords of vast numbers of users within the company's internal data storage system.
In a March 21 blog post, Facebook said the incident could have affected "hundreds of millions of Facebook Lite users, tens of millions of other Facebook users and tens of thousands of Instagram Inc. users." Facebook Lite is an Android app designed for users with low-speed internet connections and less-advanced phones.
The passwords were not made visible to anyone outside of the company, and there is no evidence so far that they were "internally abused or improperly accessed," according to the blog post.
Facebook said it will notify all users who have been affected.