Earlier this week, an anonymous 4chan user claimed to have obtained images on Snapchat - the ephemeral messaging service that allows users to send pictures that should disappear after a few seconds. Now, messages posted on the 4chan website suggest that up to 200,000 images will be released soon in an event dubbed The Snappening. A third-party Snapchat client app has been collecting every photo and video file sent through the message site for years, giving hackers access to a 13GB private library. But Snapchat has denied that its service was ever compromised. How likely is it to be a hoax? And if it's indeed real, will it be anywhere near as big "fappening"?