9004 Problems of information security. Computer systems Проблемы информационной безопасности. Компьютерные системы 2071-8217 4 Detecting anomalies in security events based on statistical analysis and large language models Обнаружение аномалий в событиях безопасности ОС на основе статистического анализа и больших языковых моделей 0009-0001-3348-5038 Nemchinov Alexander sasha01082004@gmail.com 0000-0002-2009-5460 Ovasapyan Tigran otd@ibks.spbstu.ru 0009-0002-7321-7430 Zhukovskii Evgeniy bugaev.va@edu.spbstu.ru St. Petersburg State University of Telecommunication Named After Professor M. A. Bonch-Bruevich Peter the Great St. Petersburg Polytechnic University 09 06 2026 2 49 59

The possibilities of using large language models and statistical methods to automate the detection of anomalies in OS security events are investigated. A method for detecting anomalies is proposed that allows to automatically identify significant deviations and form their interpretation. A software prototype implementing this method has been developed and tested.

 Statistical analysis large language models anomaly detection