The issue of security currently has a number of challenges. One of the most important is global warming, another is the significant increase in the global population, cyber threats and the accelerating development of SMART technologies in connection with artificial intelligence. More than 71 per cent of the Earth’s surface is covered by seas and oceans. Much of it is very remote from human settlements. Changes in the global environment have led to a shift in the approach in protecting critical infrastructure and their transition to enhancing the resilience of critical entities. Research on the new approach has been successfully conducted at the University of Žilina for a long period of time. Past and current research projects are directed to the area of linking high technologies with social sciences. Security research is always multi-level and multi-disciplinary.