The data security in the information exchange process is one of the major critical factors that justice sector professionals must cope with, particularly in international cooperation. The J-WeB project, running in the frame of the Information Society and Technology Programme of the European Union, intends to offer a new solution for secure and reliable multimedia document exchange and storage among judicial operators of different Member States working at joint cross-border pre-trial investigations on criminal matters. The J-WeB Judicial Collaboration Platform aims at the provision of Governmental bodies with more safe, easy-to-use and cost-effective working instruments, but also, through the involvement of the Italian and the Montenegrin Ministries of Justice as pilots, at the factual contribution to the policy and technology transfer from Europe to Western Balkans. This paper is meant to present the project and its technical features.