0

Single-Factor Authentication

KZero Staff
Oct 18, 2023

Single-factor authentication, or SFA,  is a fundamental security measure that verifies the claim of a user’s identity and matches it to credentials used to validate themselves digitally. Those credentials are typically a combination of a username, such as an email address and a password. It relies on the principle that the user possesses or knows the correct credentials to access a network or privileged information. This information can be anything from a file to a password.

How Does Single-Factor Authentication Work

Single-factor authentication works when a piece of information is compared to pre-stored information in an authentication server. If the information entered matches the pre-stored ones, the user can access the server or privileged information. Today, most SFAs will typically not compare the credential itself but a computation of that value against the computation of the user-provided input. Single-factor authentication can be carried out in various forms:

  • Password-based authentication
  • Biometrics, such as fingerprint scanners or facial recognition
  • Hardware tokens, such as smart cards, USB hardware, and One-Time Passwords (OTP)

Advantages of Single-Factor Authentication

SFA has many advantages as it’s ubiquitous and familiar to many users globally. It is also easy to use and is more cost-effective as it does not require the infrastructure or technology associated with multi-factor authentication. Single-factor authentication provides several benefits, including:

  • Cost-Effectiveness for Businesses: SFA requires less infrastructure and fewer resources, making it cost-effective.
  • Simplicity: It’s easy for users. Remember a password or a PIN, and you’re good to go.
  • Ease of Implementation: Both users and service providers find it uncomplicated to set up.
  • Quick Access: It’s fast. Enter your credential, and you’re in.
  • Low Overhead: Generally less complex than multi-factor methods in terms of technology and user education.

Disadvantages of Single-Factor Authentication

Some disadvantages of single-factor authentication include:

  • Security Risks: If that single factor gets compromised, your security is at risk. Think of a stolen password giving unauthorized access.
  • Compliance: In certain jurisdictions, it may be necessary to have an authentication system that is more secure than SFA.
KZero Staff

Explore more insightful content from the knowledgeable KZero staff on our blog and guides section.

Glossary Terms

Stay up to date with the most recent #infosec topics

Trending Topics

Share the page: