Given the rapid development of artificial intelligence in recent years, a question arises as to whether it could be used to improve the security of online services. In recent years, the internet is increasingly becoming a large part in people's lives, resulting in being one of the main means in media, entertainment, communication and more. However, there are many who use the internet with the intention to increase profit, not always through legal or moral means. By detecting and exploiting system vulnerabilities, malicious internet users can gain access to sensitive data, resell them to third parties, or even attack websites of large corporations or governments. At the same time, however, with the increase in computing power and the development of mathematics and statistics, significant progress has been made in the field of artificial intelligence (AI). AI is a field with applications in many different fields like education, economics, science, health and more. In recent years, it has also been used in the cybersecurity domain to develop security systems that seek to predict or detect an impending attack while minimizing the possibility of intrusion and data leakage. Within the context of this diploma thesis, a system has been developed that runs in parallel to a web application aiming to detect abnormal user behavior in real time, while also taking measures to exclude malicious users.