Question

XSS stands for ____.

• A. Extra Security Shell
• B. Cross Site Scripting
• C. Cross Shell Scripting
• D. Extra Shell Script

Hint:

Remember common web security terms:
• XSS $\rightarrow$ Cross Site Scripting.
• SQL Injection $\rightarrow$ Database attack.
• CSRF $\rightarrow$ Cross-Site Request Forgery.
• HTTPS $\rightarrow$ Secure web communication.

Answer 1

The Correct Option is B

Concept: Cross-Site Scripting (XSS) is a common web security vulnerability in which an attacker injects malicious scripts (usually JavaScript) into a trusted website. When another user visits the affected webpage, the malicious script executes in the user's browser. XSS is one of the most common attacks on web applications.

Step 1: Understand what XSS is.
Cross-Site Scripting occurs when a web application:
• Accepts user input.
• Fails to properly validate or sanitize the input.
• Displays the malicious script to other users. The browser executes the injected script as if it came from the trusted website. \[ \boxed{\text{XSS = Cross Site Scripting}} \]

Step 2: Effects of an XSS attack.
An attacker may use XSS to:
• Steal session cookies.
• Hijack user accounts.
• Redirect users to malicious websites.
• Display fake forms or misleading content.

Step 3: How can XSS be prevented?
Common prevention techniques include:
• Input validation.
• Output encoding.
• Escaping special characters.
• Using Content Security Policy (CSP).

Step 4: Analyse the options.

• Extra Security Shell -- Incorrect.
• Cross Site Scripting -- Correct.
• Cross Shell Scripting -- Incorrect.
• Extra Shell Script -- Incorrect.

Step 5: Final conclusion.
Hence, XSS stands for: \[ \boxed{\text{Cross Site Scripting}} \]