Terabytes of data for the period from 2012 to 2015 have been leaked from TestFlight, Apple's app and game testing service. Thousands of iOS games and apps can now be found in the public domain.
According to Eurogamer, the files on the servers were found archived through the Wayback Machine, after which they were anonymously shared on X (formerly Twitter).
The craftsmen have even managed to create a service where you can search for certain programs among the files uploaded to the network - TestFlight Teraleak Search.
TestFlight is a service used by developers to test apps and games before they are published in the App Store, so you can find a lot of interesting things among the leaked files, including previously unseen ones, such as several unreleased Angry Birds games.