Web Security Concepts and Attacks

The video covers various cybersecurity threats, including phishing, cross-site scripting (XSS), SQL injection, command injection, and cross-site request forgery (CSRF). It explains how these attacks work, their potential impact, and strategies for prevention. The importance of server-side validation over client-side validation is emphasized. The video also discusses software security, the role of open-source software, and the concept of bug bounties as a way to improve security.

What is the primary purpose of the 'href' attribute in an HTML anchor tag?

• To specify the text that appears as the link

• To define the URL or file the link points to

• To execute JavaScript when the link is clicked

• To style the link with CSS

How can an adversary exploit a hyperlink to perform a phishing attack?

• By embedding a video in the link

• By using a different font style for the link

• By altering the visible text to mislead users

• By changing the color of the link

What is a reflected XSS attack?

• An attack that uses CSS to change the appearance of a page

• An attack that targets the server's database

• An attack where malicious code is reflected off a web server

• An attack where malicious code is stored on the server

Which HTTP header can help prevent inline script execution in a web page?

• Content-Security-Policy

• Accept-Language

• Cache-Control

• Content-Type

What is a primary defense against SQL injection attacks?

• Using client-side validation

• Implementing prepared statements

• Relying on user input

• Disabling SQL commands

How can an adversary exploit a web application using SQL injection?

• By using a secure password

• By disabling JavaScript in the browser

• By using a VPN to hide their identity

• By injecting malicious SQL code into user input fields

Why is it important to use server-side validation in web applications?

• To improve the visual design of the website

• To ensure that user input is correctly formatted

• To prevent users from bypassing restrictions by manipulating HTML

• To make the website load faster

What is the primary reason for using the POST method in web forms instead of GET?

• To make the form more user-friendly

• To allow multiple form submissions

• To ensure faster data transmission

• To prevent data from being exposed in the URL

How can CSRF tokens help in preventing cross-site request forgery attacks?

• By making the form submission faster

• By ensuring the form is submitted only once

• By encrypting the form data

• By adding a unique, server-generated value to the form

What is a buffer overflow attack?

• An attack that fills the memory with random data

• An attack that exploits a program's memory allocation to execute malicious code

• An attack that slows down the system by overloading the CPU

• An attack that targets the network bandwidth