New Delhi: Knowledge-sharing website Quora reported a massive data breach, where hackers breached their network and accessed a variety of potentially sensitive personal data for about 100 million users.

Their network was affected by unauthorised access by a ‘malicious third party’.

The company said that account information, including names, email addresses, encrypted passwords and data imported from linked networks were compromised.

"We're still investigating the precise causes and in addition to the work being conducted by our internal security teams, we have retained a leading digital forensics and security firm to assist us. We have also notified law enforcement officials," Quora said in a security update.

Quora said that they will log out all users to prevent further damage. "We are in the process of notifying users whose data has been compromised," Quora CEO Adam D'Angelo said.

The hackers were unable to access questions and answers that were written anonymously, because the website doesn’t store the information of people who post anonymous content.

The website is notifying affected users with relevant details via email. 

The Quora Inc-owned website was founded in 2009 by D'Angelo and Charlie Cheever, two former Facebook employees.