In this article the author analyzes various legal aspects necessary for maintaining the rights of citizens to live in a free, safe and democratic state of contemporary digital era. She presents philosophical and legal origins of the rights to privacy and the development of the concept in different countries with a particular emphasis of its place in the digital world of modern democracies. She tries to show the importance of this concept as the premise for national security and compares legal solutions in different countries all over the world. It makes the article important because her interests go into comparing and finding not only the best examples and legal cases but practical knowledge which may be used in academic work and research.