The purpose of the study is to develop an experimental model of the oil leak detection system along the controlled section of the pipeline. The leak detection system should prevent not only material damage caused by attackers but also major disasters. Preliminary analysis of leak detection methods and principles of operation of hardware and software security diagnostics of the state of pipe transport networks has been considered. A method of studying experimental data and presenting results has been developed. Different literature sources have been analyzed, these literature sources provide information about real cases of pipeline system diagnostics and leak or defect detection. The software and hardware part of the control systems for conducting checks along the control part of the pipeline have been developed. It has been established that the proposed system has advantages in terms of the "quality-price" ratio, speed, and durability over existing systems using methods based on negative pressure waves. The prospect of further research in this direction is the determination of damage and losses for the oil industry as a result of malicious damage to the linear part of oil pipelines.