A breach at the question and answer website Quora has compromised the data of 100 million users.

Last Friday the company discovered an intrusion by a third party and has “already taken steps to contain the incident,” Quora said in an email to users obtained by SC Media.

Information that could have been compromised is account and user data, including names, email addresses, user IDs, encrypted passwords, account setting and other personalization data as well as public actions and content, data from linked networks and non-public actions such as down votes.

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