Final answer:
Stored Cross-Site Scripting (XSS) is the most dangerous type of XSS where malicious scripts are stored on a web server to be executed later. Hackers use techniques like deceitful links to inject these scripts. It is essential to validate and sanitize user input to prevent these attacks.
Step-by-step explanation:
The question refers to a type of security vulnerability known as Stored Cross-Site Scripting (XSS). Stored XSS is the most dangerous form of cross-site scripting because the malicious script is stored on the target server, such as in a database, message forum, visitor log, or comment field, and is then later presented to other users.
When a user accesses the stored data, the malicious script is executed, potentially leading to unauthorized access, data theft, and other harmful outcomes.
Hackers utilize various techniques to inject malicious scripts into web applications. They may lure people to click on links containing the XSS payload or deceive them into providing sensitive information.
It is critical for web applications to properly validate and sanitize all user input to prevent such attacks. Regular updates and security patches are also key to defending against new threats as they emerge.