Facebook has a feature that allowed you to back up your photos to “Private” storage. According to Facebook, a “bug” found in September (90 days ago) may have exposed them to Facebook Developers even though they were private and never meant to be shared. Oh and Facebook just hosted a "pop-up: store in New York City’s to explain how privacy is the “foundation of the company,”
Buzzfeed has the story.
"On Friday, the Menlo Park, California-based company said in a blog post that it discovered a bug in late September that gave third-party developers the ability to access users’ photos, including those that had been uploaded to Facebook’s servers but not publicly shared on any of its services. The security flaw, which exposed photos for 12 days between Sept. 13 and Sept. 25, affected up to 1,500 apps from 876 developers, according to Facebook.*