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Quora Got Hacked: 100 Million Users Affected

Dave Parrack 05-12-2018

Quora has been hacked. The result is that up to 100 million Quora users may have had their data accessed by an as-yet-unknown third party. Quora is actively investigating the incident, and has already taken various steps to improve its security.


For the uninitiated, Quora is a Q&A website What Makes Quora Better Than Other Q&A Sites? For those of you who aren't already using Quora, why not? Maybe it's time to give it a try. You may be surprised by how useful it can be. Read More which pairs people who have questions with people who have the answers. It’s a fascinating website, and you’re guaranteed to learn something new every time you visit. Including that Quora itself has suffered a data breach.

Quora Reveals It Has Been Hacked

Quora CEO Adam D’Angelo disclosed the incident in this Quora Security Update. In the post, he revealed that “some user data was compromised as a result of unauthorized access to one of our systems by a malicious third party.”

The hacker gained unauthorized access to one of Quora’s systems. And certain information for “approximately 100 million Quora users” may have been compromised. This information includes:

  • The name, email address, and encrypted password you have associated with your account. Thankfully, Quora has stated that passwords are “hashed using bcrypt with a salt that varies for each user”.
  • Public content and actions, which means the questions, answers, comments, and upvotes you have made on the site.
  • Non-public content and actions, which means answer requests, downvotes, and direct messages which aren’t otherwise visible.

There is also a risk that “data imported from linked networks when authorized by users” may have been accessed. Quora lets users sign in using Google or Facebook, so this could potentially spell disaster. Thankfully, there’s no financial information at risk here.


Change Your Quora Password, ASAP

Quora has both its internal security team and a digital forensics company investigating the incident. And it has also notified law enforcement. The company is currently notifying all users whose data has been compromised in the hack.

As is always best practice after a data breach, you should change your password Are Frequent Password Changes Actually Good for Your Security? How often do you change your password? Only occasionally, or too often? Here are the pros and cons of changing your password too frequently. Read More ASAP. In fact, Quora has logged all affected users out of the site, and if you’re one of them you’ll need to change your password when prompted.

Related topics: Data Security, Hacking.

Affiliate Disclosure: By buying the products we recommend, you help keep the site alive. Read more.

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  1. victor
    December 11, 2018 at 12:09 pm

    my account has been hacked and am trying to recover it back, going through the process above in the written article, i got stucked at a point. i wasn't getting the proposed reply from the article i read from facebook. I clicked the "no longer have access these" but facebook isn't asking me to "set a new email address or phone number".
    What do i do from here please? the one who hacked my account is making use of my account for fraud to all my contacts.
    I need a response asap please

  2. ReadandShare
    December 6, 2018 at 12:23 am

    A site like Quora -- or MUO -- where I add innocuous comments from time to time using a handle that's obviously not my real name... I suppose no harm done - so long as I use different passwords for different sites?

    • Cobb's
      December 7, 2018 at 3:10 pm

      I help by a hack I never believed it work on it now he hack for me and I just received a hack

    • Adam Eximen
      December 11, 2018 at 7:43 pm

      Quora is just as bad, they are all dictatorial in their approach, they tend to be very arrogant as well, heavy censorship, you can't express your views freely and not to mention the double standard, if you criticise anything or anybody it's Ok, but the minute you mention Israel or Zionism you will receive some warning from the moderation team and your comment or post is deleted regardless if it's the truth. So Quora I have had it with them as well.