Example of Session Hijacking

    skycentral.co.uk | Example of Session Hijacking

    Understanding <span class="glossary-tooltip glossary-term-362"><span class="glossary-link"><a href="https://skycentral.co.uk/glossary/intrusion-detection-system-ids/">Session Hijacking</a></span><span class="hidden glossary-tooltip-content clearfix"><span class="glossary-tooltip-text">Intrusion Detection System (IDS): A system that monitors net...</span></span></span> and How to Prevent It

    Understanding Session Hijacking and How to Prevent It

    What is Session Hijacking?

    Session hijacking is a security attack that involves an unauthorized person gaining access to a legitimate user’s session. This can happen when an attacker intercepts and uses the session cookie or token of a legitimate user to impersonate them and access sensitive information or perform actions on their behalf.

    Types of Session Hijacking

    2.1. In-Transit Session Hijacking

    In-transit session hijacking, also known as man-in-the-middle attack, occurs when an attacker intercepts the communication between the user and the server to steal the session data.

    2.2. Cross-Site Scripting (XSS)

    Cross-Site Scripting (XSS) attacks can also lead to session hijacking by injecting malicious scripts into a web application, which can then hijack the user’s session.

    Example of Session Hijacking

    An attacker may use a packet sniffer to intercept and read network traffic to obtain session cookie information. Once the attacker has the session ID, they can use it to impersonate the user and gain unauthorized access to their account.

    Preventing Session Hijacking

    There are several measures that can be taken to prevent session hijacking:

    • Use HTTPS to encrypt communication between the user’s device and the server.
    • Employ strong session management techniques, such as regularly changing session IDs, implementing timeout mechanisms, and using secure cookies.
    • Implement Web Application Firewall (WAF) to detect and block potential session hijacking attempts.


    Session hijacking is a serious threat to the security of online sessions and can lead to unauthorized access to sensitive information. By understanding the different types of session hijacking and implementing preventive measures, businesses and individuals can reduce the risk of falling victim to this type of attack.