All The Different Ways That 'iCloud' Naked Celebrity Photo Leak Might Have Happened
Jennifer Lawrence
Jennifer Lawrence

Samir Hussein/Getty

After naked photos of about 20 celebrities leaked online last night, the internet scrambled to try and figure out exactly how the images became public. In the original 4chan thread where the hacker first posted the images, the consensus was that Apple's iCloud service was to blame. But how likely is it that Apple's encrypted cloud service led to the mass hack, and what are the other ways that the nude photos could have emerged? iCloud

The original leaker behind the celebrity photos claimed that they accessed the images using the iCloud accounts of various celebrities. It's unlikely that someone has broken into Apple's iCloud service. Instead the photos most likely emerged due to a type of hacking known as "social engineering." This exploit works by learning which online services your target uses, and then compiling as much data on them as possible before using that data to either spoof access, or to simply use their email address and a guessed password to log in to their account.

Jennifer Lawrence is known to use iCloud after she let slip in a red carpet interview with MTV this year that she frequently has trouble with the service, remarking "My iCloud keeps telling me to back it up, and I'm like, I don't know how to back you up. Do it yourself."

After discovering the iCloud account of a celebrity, it's trivially easy to access their online photo backup through Apple's Photo Stream utility and iCloud photo backups. Analysis of the embedded EXIF data (information about where and how the picture was taken that is frequently appended to digital photo images) included in one of the leaked images shows it was taken a few weeks ago, well within Photo Stream's limit of 30 days before images are deleted. However, actress Mary Elizabeth Winstead claimed on Twitter that the leaked photos of her included in the hack were taken "years ago."

Dropbox or Google Drive

Despite the original leaker claiming to have accessed the trove of photos thanks to an iCloud exploit, the range of devices showcased suggests that another service may have been to blame. Various naked celebrities are photographed taking selfies with Android devices and webcams. Leaked videos could not have originated from the iCloud photo backup service. The range of devices and media may mean that another backup service like Dropbox or Google Drive could be the originator of the leaked photos, with both services offering automatic backup tools for photos and videos imported from cellphones.