MENLO PARK, Calif. (CBSNEWS.COM) – More than 540 million records about Facebook users were publicly exposed on Amazon’s cloud computing service, according to a cybersecurity research firm. A report out Wednesday by UpGuard said two third-party Facebook app developers posted the records in plain sight, causing yet another major data breach for the world’s biggest social network.

File photo of the Facebook logo. (credit: Leon Neal/AFP/Getty Images)

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