Web Security: Common Vulnerabilities And Their Mitigation - 2 factor authentications and OTPs

The video tutorial explains two-factor authentication (2FA), a security measure requiring two forms of identification to verify a user's identity. It covers the components of 2FA, such as something the user knows, possesses, and is inseparable from the user. The tutorial uses ATMs as a real-world example and discusses the broader concept of multi-factor authentication (MFA). It highlights the challenges and costs of implementing 2FA, especially hardware-based solutions, and suggests mobile-based 2FA as a more convenient alternative. The video also addresses the disadvantages of mobile-based 2FA, including privacy concerns and potential security risks.

What is the purpose of two factor authentication?

Explain the components involved in two factor authentication.

What challenges are associated with hardware tokens in two factor authentication?

Describe the differences between hardware-based and mobile-based two factor authentication.

How does a one-time password (OTP) work in the context of two factor authentication?

What is the significance of the time limit associated with one-time passwords?

What are the advantages of using mobile phones for two factor authentication?

How does two factor authentication enhance security compared to a single password?

What are the potential security risks of using SMS for OTP delivery?

Discuss the implications of losing a smartphone that is used for two factor authentication.