Description: Malicious activity detection is a critical component in the field of cybersecurity, especially in the context of authentication. This process involves identifying behaviors or actions that may indicate an attempt at unauthorized access or fraudulent activities within a system. In a Zero Trust security environment, where it is assumed that no entity, whether internal or external, is trustworthy by default, malicious activity detection becomes an essential tool for protecting digital resources. It employs advanced techniques such as pattern analysis, machine learning, and artificial intelligence to monitor and evaluate user interactions with the system. By detecting anomalies in real-time, automatic responses can be triggered, such as revoking access or requiring additional authentication, helping to mitigate risks before they escalate into security breaches. This proactive approach not only enhances security but also optimizes user experience by reducing friction in the authentication process, allowing for smoother and safer access to necessary resources.