Quora revealed 100 million users data might have compromised on last Friday, hack into its systems by a malicious third party.
The company is investigating into the incident and taking steps to prevent this mishap in future. Quora is uncertain as of now how the breach occurred. Its internal security teams are working on the incident to find the cause and contain the damage.
What information was involved
For approximately 100 million Quora users, the following information may have been compromised:
- Account information, e.g. name, email address, encrypted (hashed) password, data imported from linked networks when authorized by users
- Public content and actions, e.g. questions, answers, comments, upvotes
- Non-public content and actions, e.g. answer requests, downvotes, direct messages (note that a low percentage of Quora users have sent or received such messages)
Questions and answers that were written anonymously are not affected by this breach as we do not store the identities of people who post anonymous content.
The overwhelming majority of the content accessed was already public on Quora, but the compromise of account and other private information is serious.
The company is notifying the affected users through emails and logging out all users who may have been affected,
Quora has updated its help section with the information relevant to this incident.