In modern times, the security of information systems in various spheres of human activity in the world is at the key place, due to the increasing digitalization of various aspects of human activity. More and more, algorithms based on advanced artificial intelligence based on machine learning models are being introduced to simplify the work of people performing various tasks, which proportionally reduces the human factor, which negatively affects the reliability of the enterprise, when working and processing documents, which in turn increases the reliability of target activities, and also provides the ability to work with large volumes of data, without large financial investments while maintaining a sufficient level of efficiency and quality. The article presents the results of the development of an algorithm for ensuring legal security based on artificial intelligence based on machine learning with recommendations for the implementation of this algorithm. The developed algorithm is a convenient and flexible security system for the legal aspect of the enterprise, which is achieved by using artificial intelligence based on machine learning models.