Within the recent history, the world has experienced dramatic events which had a substantial effect on the "struggle" between data protection and security measures. This "struggle" can be clearly seen in the issues of data transfer from the European Union to the United States of America - the "struggle" between the US demands for access to information and the EU data protection compliance obligations. How much of European air passenger personal data should be shared with the US authorities and under which conditions should this take place? The thesis examines the problem, its...