Thousands of pictures on Snapchat taken by teenagers have appeared online in what is being dubbed 'the snappening'.
It comes after 'the fappening' in which nude images taken from iCloud were shared on the internet.
But while the 'fappening' was focused on celebrities, the 'snappening' is affecting ordinary teenagers who tend to be the predominant age group using the Snapchat app.
The photographs were leaked online via viralpop.com, but Snapchat has rejected any link with the leak, saying its servers were not breached.
The material has now been deleted, but not before the images were downloaded thousands of times.
Half of the people on Snapchat are aged between 13 and 17, raising child protection fears.
The size of the database has been estimated to be between 100,000 and 200,000 images, with the majority of Snapchat's users under the age of 18.
