Quora suffered a data breach which affected 100 million of its users. The breach was discovered on 30 November by Quora, and it is not known how it occurred. According to the official press release, users’ information that was exposed included account information, e.g. name, email address, encrypted password (hashed with a salt that varies for each user) as well as data imported from linked networks when authorized by users, public content and actions (e.g. questions, answers, comments, upvotes), and non-public content and actions (e.g. answer requests, downvotes, direct messages). Questions and answers that were written anonymously were not affected by this breach, because Quora does not store the identities of people who post anonymous content.