The aim of the paper was to present the security of computer systems through the segment of technical protection in order to understand the functioning, and as an opportunity to improve the security of the systems themselves. Through our work, we looked at the security segment and strategy and took a real example from the business sector where this protection can be applied. The presentation of equipment that can be found on the domestic market is included, and in combination they form one of the more serious units for the protection of protected facilities. Implementation is crucial and requires a lot of financial sacrifice over a long period of time, in order to successfully preserve the integrity of the system and achieve the goal. Contributions must be made by everyone involved in the implementation project, from equipment installation technicians to the designers who design the system itself. Many companies around the world use technical protection to ensure the safety of property and employees themselves.