Juraj Sajfert joined the Vrije Universiteit Brussel (VUB) in October 2019 and is in charge of a research project 'Making transparent invisible surveillance: Digital investigatory measures in the European Union and their compatibility with EU data protection law'. Previosuly, he spent more than five years working for the Data Protection Unit of DG Justice and Consumers at the European Commission, moving from the position of a case-processing lawyer at the European Court of Human Rights. Since 2014, Juraj worked on the development and application of EU data protection law. Juraj has been closely involved in the process of drafting and negotiating the new EU data protection legislation, particularly focusing on the Data Protection Directive for police and criminal justice authorities, the Data Protection Regulation for Union institutions and bodies and data protection rules for the European Public Prosecutors’ Office and Eurojust. He publishes regularly on topical issues for data protection in the area of law enforcement.