Technological development, faster and more aggressive than ever, is the generator of almost all changes in the world. The area undergoing the most intensive change at the moment is industrial production and its systems. The speed with which the terrain of industrial production is changing isso fast that a good part of the world has not yet made a complete transformation into the third industrial revolution, and the fourth is already being mentioned. Industry 4.0 describes the path of current industrial production in its transformation into a new so-called smart industry. It is fundamentally based on the development of information and communication technologies. Industry 4.0 connects all parts of production processes that actively work in the production process into one large network chain, while along the way it collects data and analyzes it in real time with the aim of improving every part of production processes. This improves competition by anticipating customer wishes and expectations and optimizing costs. The terms we associate with this new revolution are internet of things, internet services, big data, cloud computing, artificial intelligence, autonomous vehicles along with many others. The main changes that come with Industry 4.0 are changes that directly affect business systems, social connections, and the basic way of working and education. In this paper, I will show all the changes and challenges as well as opportunities that Industry 4.0 brings. I will show how to overcome one of the biggest challenges of rapid digitization and the danger it poses to digital security. I will list the ways of easier adaptation to aggressive changes, and what impact it has on society, workplaces and the state of Croatia itself.