Session Hijacking
Session hijacking is a security attack where an attacker steals or takes over a user's active session on a web application or network, typically by intercepting or predicting session tokens like cookies. It allows the attacker to impersonate the legitimate user and gain unauthorized access to their account or data without needing login credentials. This attack exploits vulnerabilities in session management, such as insecure transmission or storage of session identifiers.
Developers should learn about session hijacking to build secure applications that protect user sessions from theft, especially for systems handling sensitive data like e-commerce, banking, or healthcare. Understanding this concept helps implement defenses like HTTPS, secure cookies, session timeouts, and token validation to prevent attacks like man-in-the-middle or cross-site scripting (XSS). It's crucial for compliance with security standards like OWASP Top 10, which lists broken authentication and session management as common risks.