What does credential stuffing involve?

• A. Using encryption methods on passwords
• B. Using stolen account credentials to gain unauthorized access
• C. Using browser plugins to store passwords
• D. Using multiple factor authentication

Answer: (B)

Credential stuffing refers to the cyberattack method where attackers use stolen account credentials—typically usernames and passwords—that have been leaked from a data breach to gain unauthorized access to accounts on different websites. This method takes advantage of the unfortunate tendency of users to reuse the same credentials across multiple platforms.

By automating the login attempts with these valid but stolen credentials, attackers exploit the fact that many people do not take the necessary precautions to secure their various accounts with unique usernames and passwords. This practice continues to be a significant threat to online security, as it can lead to significant breaches of personal and financial information.

The other options represent different aspects of cybersecurity. Using encryption methods on passwords enhances security but does not embody the concept of credential stuffing. Storing passwords with browser plugins is a convenience feature that can sometimes introduce vulnerabilities, but it is not related to the act of unauthorized access through stolen credentials. Multi-factor authentication is a security measure designed to add an extra layer of protection against unauthorized access, countering the effectiveness of credential stuffing rather than embodying the method itself.