A cybersecurity firm just found 540 million people's Facebook records in a public online database

Mark Zuckerberg.
(Image credit: Getty Images)

Facebook truly cannot keep all its data in one basket.

User data including account names, passwords, and email addresses have been stored for years on publicly accessible Amazon cloud computing servers, researchers at cybersecurity firm UpGuard have discovered. The data was compiled several years ago, when Facebook used to more freely share it with third-party apps, but is still sitting unguarded, Upguard tells Bloomberg.

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Thousands of apps and websites let users log in with their Facebook credentials, and often ask to access users' Facebook interactions as a condition for doing so. That practice was widely realized during last year's Cambridge Analytica scandal, which revealed how private Facebook user data had been used for political ad targeting. Facebook has since said it has banned third-party apps from scraping private user information.

Upguard says they notified Cultura Captiva about the issue twice but received no response. A Facebook spokesperson told CNN Business that "Facebook's policies prohibit storing Facebook information in a public database," and that it has "worked with Amazon to take down the databases."

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Kathryn is a graduate of Syracuse University, with degrees in magazine journalism and information technology, along with hours to earn another degree after working at SU's independent paper The Daily Orange. She's currently recovering from a horse addiction while living in New York City, and likes to share her extremely dry sense of humor on Twitter.