Dec. 4 (UPI) -- Question and answer website Quora says a data breach has compromised the information of as many as 100 million users.
The hack could affect account information like passwords, data imported from linked networks and public content like questions, answers, comments and upvotes, Quora CEO Adam D'Angelo said in a statement.
"We have retained a leading digital forensics and security firm to assist us," D'Angelo said. "We have also notified law enforcement officials. While the investigation is still ongoing, we have already taken steps to contain the incident, and our efforts to protect our users and prevent this type of incident from happening in the future are our top priority as a company."
Many users who created Quora accounts over the last decade and forgot they had one were notified via email that their data could have been stolen. Some vented frustration on social media.
I haven't used Quora in at least 10 years, but I'm sure my account was involved in the breach https://t.co/5ge6c5Sl8N- Michael Heller (@MT_Heller) December 4, 2018
Under the frequently asked questions about the attack, Quora included the query, "I didn't know I had a Quora account. How is it that my email or information was exposed?"
The answer: "You may have signed up for Quora some time ago. While you might not have regularly visited or used Quora, your account remained."
The news comes just days after Marriott reported a data breach that compromised personal information for 500 million hotel guests.