Tech moves fast! Stay ahead of the curve with Techopedia!
Join nearly 200,000 subscribers who receive actionable tech insights from Techopedia.
Two-Factor Authentication
Definition - What does Two-Factor Authentication mean?
Two-factor authentication is a security mechanism that requires two types of credentials for authentication and is designed to provide an additional layer of validation, minimizing security breaches.
Two-factor authentication is also known as strong authentication.
Techopedia explains Two-Factor Authentication
Two-factor authentication works with two separate security or validation mechanisms. Typically, one is a physical validation token, and one is a logical code or password. Both must be validated before accessing a secured service or product. Generally, an authenticating procedure requires a physical token or identity validation, followed by a logical password or personal identification number (PIN).
The security procedure for an ATM machine is a common example of two-factor authentication, which requires that a user possess a valid ATM card and PIN.
-
The Cybersecurity Blueprint: A Four-Part Model for Providing Comprehensive Layered Security - Cyberattacks have increased in both number and severity over the past few years; ransomware alone is responsible for roughly $5 billion USD in 2017. Cyberthreats loom over both individuals and businesses.
![[WEBINAR] Real-World Data Fuels the 'New Intelligence'](http://cdn.techopedia.com/resource/images/qrcode.png?mode=fit&width=200&height=150)
