What Is Two-Factor Authentication?

What Is Two-Factor Authentication?

Two-factor authentication (2FA) is a security measure that adds an additional layer of protection to the traditional username and password login process. With 2FA, users are required to provide a second form of authentication, such as a code sent to their phone or a fingerprint scan, in addition to their username and password.

Think of this as “something you know” (your username/password combination) plus “one other thing”; something you have or something you are. You may “have” a hardware token or an authenticator application that provides a code every 60-120 seconds, or “you” might entail your face, your eyes, or your fingerprint.

The purpose of 2FA is to prevent unauthorized access to an account, even if someone manages to obtain or guess the user’s password. With 2FA, an attacker would also need access to the user’s second factor, which is typically a physical device that only the user possesses.

2FA is important because it significantly increases the security of online accounts and helps protect against a variety of threats, such as phishing, password theft, and other forms of cybercrime. By requiring a second factor of authentication, 2FA makes it much more difficult for attackers to gain unauthorized access to sensitive information and data. As such, it is recommended that users enable 2FA wherever possible to enhance the security of their online accounts.

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Meet Dustin Decker, an accomplished information security research analyst with a wealth of expertise in daily cyber defense, incident response, intrusion detection, and network forensics. With a journey in Information Security dating back to 1999, Dustin earned his first bachelor’s degree in computer information systems from DeVry University in 2001.

But Dustin is not just about the past – he’s at the forefront of cutting-edge technology. He’s passionate about automating “all the things” using Python, PowerShell, and embracing solid DevSecOps principles. Beyond his individual achievements, Dustin’s excellence has been recognized, leading to his recent invitation to the prestigious SANS GIAC Advisory Board.

In a world where cybersecurity is paramount, Dustin Decker stands out as a dedicated professional, blending years of experience with a commitment to staying ahead in the rapidly evolving landscape.