Web Security Concepts and Practices

The video covers essential web security concepts, including HTTP requests, cookies, HTML parsing, content sniffing, same origin policy, CORS, and CSRF attacks. It explains how these elements affect security and provides insights into common vulnerabilities and mitigation strategies.

What are the main components of an HTTP request?

• Method, URL, Cookies, Status

• URL, Headers, Cookies, Status

• Headers, Cookies, Status, Body

• Method, URL, Headers, Body

Which header is used to specify the MIME types accepted by the client?

• Host

• User-Agent

• Accept

• Authorization

What does the 'HTTP-only' flag on a cookie do?

• Encrypts the cookie data

• Allows the cookie to be accessed by JavaScript

• Ensures the cookie is only sent with web requests

• Prevents the cookie from being sent over HTTP

What is a common security issue with HTML parsing?

• Incorrect MIME type detection

• Cross-site scripting vulnerabilities

• Cookie theft

• SQL injection

How can content sniffing lead to security vulnerabilities?

• By bypassing authentication mechanisms

• By allowing unauthorized access to cookies

• By executing scripts in improperly typed files

• By enabling cross-domain requests

What is the purpose of the same-origin policy?

• To restrict access to resources based on domain

• To prevent SQL injection attacks

• To allow cross-domain data sharing

• To enable secure cookie transmission

What does CORS allow that the same-origin policy restricts?

• Cross-site request forgery

• Cross-domain cookie sharing

• Cross-site scripting

• Cross-domain AJAX requests

What is a common method to prevent CSRF attacks?

• Using secure cookies

• Disabling JavaScript

• Implementing CSRF tokens

• Enabling CORS

Which of the following is NOT a requirement for origin matching in SOP?

• Matching cookie values

• Matching protocols

• Matching domain names

• Matching port numbers

What is a potential risk of loosening the same-origin policy?

• Increased risk of SQL injection

• Unauthorized access to the DOM

• Increased risk of cookie theft

• Unauthorized file uploads