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Web Application Security

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Questions and Answers

Why is input validation important in web applications?

To authorize user permissions
To ensure strong access control
To reduce the attack surface (correct)
To authenticate user identities

What is the primary purpose of access control?

To regulate access to protected resources (correct)
To authenticate user identities
To authorize user permissions
To validate user input

What is the difference between authentication and authorization?

Authentication is for users, authorization is for systems
Authentication proves identity, authorization grants access (correct)
Authentication grants access, authorization proves identity
Authentication is optional, authorization is mandatory

What is the purpose of authentication factors in access control?

To prove user identity (D) Signup and view all the answers

What happens if an application doesn't perform proper authentication?

Anyone can impersonate a user (B) Signup and view all the answers

What are the two related processes in access control?

Authentication and Authorization (A) Signup and view all the answers

When should authentication be performed according to the rule?

Every time a request is made to access a protected resource (C) Signup and view all the answers

What is a recommended measure against online password attacks in securing web authentication mechanisms?

Allowing account lockout after a certain number of failed attempts (D) Signup and view all the answers

What is a potential issue with allowing account lockout after a certain number of failed attempts?

It may cause flooding of customer support with requests to unlock accounts (D) Signup and view all the answers

What is an alternative solution to allowing account lockout?

Implementing CAPTCHA to work against brute-force attacks (B) Signup and view all the answers

Why should credentials not be hard-coded?

They can be easily extracted with little effort (C) Signup and view all the answers

What is a recommended approach to managing credentials?

Using a keys or credential management system (D) Signup and view all the answers

What is the purpose of rotating passwords?

To reduce the risk of password compromise (A) Signup and view all the answers

What is the purpose of validating a Session ID in every request?

To prevent session hijacking (B) Signup and view all the answers

Why is it important to disable accounts?

To prevent unauthorized access (C) Signup and view all the answers

What is the purpose of requiring password uniqueness?

To prevent password reuse (B) Signup and view all the answers

What is the role of authentication in access control?

To plays a fundamental role (C) Signup and view all the answers

What is the purpose of storing passwords securely?

To protect passwords from unauthorized access (B) Signup and view all the answers

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