As the author notes, the dynamic civilizational changes to which we are subjected are determined by technologies penetrating deeper and deeper into the sphere of biology, from which humans become a part of complex cyber-physical systems. Therefore, the very way of rationalizing the content of human experience and the need for a new, systemic understanding of security are changing. This analysis of the biological condition for security presents a model of the human being as a multidimensional organism – combining biological, psychological, social, and technological systems – and identifies homeostasis as a universal pattern of stability and adaptation. The analysis is based on the concept of open systems, using biological metaphors and mechanisms (including feedback loops, self-regulation, and functional flexibility) to reinterpret the notion of security on both personal and social levels. The relationships and tensions between technological systems and human consciousness are discussed, as well as their correlations in the context of values, identity, and community. In conclusion, the author proposes a departure from thinking about security as protection against threat and a transition to the model of security as dynamic systems of interdependence and variables based on mechanisms of integration of biological, technological, and spiritual dimensions. In this view, homeostasis appears not as a medical term, but as a philosophy for designing resilient systems capable of living with uncertainty without losing coherence.