Cyber security is a completely man made phenomenon, which has become the most complex threat to modern societies and disruptor of international relations. It affects basically all aspects of modern life and is co-evolving with the progress of technology. Governments and law enforcement have a distinct difficulty to adjust to this new culture, which is being developed mostly by hackers. Hackers play a central role in cyber security. They are the drivers of change. Cyber security is an inherent part of the world of computers, of Information and Communication Technology and of the life on the Internet. It is not a problem one can solve, ignore or wish away. It is a problem we will have to live with and that begins by trying to understand it better.