In the past years, criminals and terrorists have been using methods for concealing incriminating information in digital media files such as images, video, audio, and text files. The main objective of UNCOVER is to develop innovative technologies for detecting hidden information (steganalysis) and to increase the technological autonomy of Law Enforcement Agencies (LEAs) in the field of digital media steganalysis. With its consortium of 22 partners, which includes LEAs, forensic institutes, leading researchers and software developers as well as technology companies, UNCOVER aims to improve current standards of steganalysis solutions regarding the performance, usability, operational needs, privacy protection, and chain-of-custody considerations.