Session management is a crucial aspect of web application security, aiming to protect user accounts from unauthorized access while minimizing the inconvenience of frequent re-authentication. It involves managing user login sessions, which can be short-lived, requiring re-authentication after every app exit, or long-lived, allowing users to stay logged in across sessions. Although long-lived sessions enhance user convenience, they pose security risks if unauthorized individuals access the user's device. Effective session management encompasses creating unique session IDs, storing them as cookies or tokens, and setting appropriate session expiry dates to prevent vulnerabilities such as session hijacking and fixation. By implementing security measures like secure cookies, session expiry protocols, and anomaly detection, web applications can safeguard user data while maintaining a seamless user experience.