Two-Factor Authentication (2FA): A Simple Guide
- Passwords alone are no longer enough to protect sensitive information, networks and applications. With data breaches, credential theft and phishing attacks increasing, it has become easier for attackers to steal or guess login credentials. Two-Factor Authentication (2FA) adds an extra layer of security to make sure that even if a password is compromised, unauthorized users still can’t get in.
What is 2FA?
Two-Factor Authentication (2FA) is a security method that requires two proofs of identity before granting access:
Something you know – like a password.
Something you have or are – like a phone, authenticator app, security token or biometric.
This double-check makes it much harder for attackers to break into accounts or networks that rely only on stolen credentials.
How Does 2FA Work?
- Here’s a simple way to picture it. Logging in with 2FA is like unlocking a safe with two locks. You need the key (password) and the code (second factor). Without both, the safe remains locked. With QAM, the process is straightforward:
- The user enters their username and password.
- QAM asks for a second verification method. This could be:
- A one-time code via SMS or Email
- Security questions (custom or pre-defined)
- A time-based code from an Authenticator App (Google Authenticator, Microsoft Authenticator, Authy)
- A Push Notification, QR code or Soft Token from the Quantum Authenticator app
- A Hardware Token like YubiKey for high-security environments
- Once both steps are verified, access is granted.
This simple step blocks most unauthorized attempts, even if the password is leaked.
Why 2FA Matters?
- 2FA majorly boosts user confidence. Employees and customers feel safer knowing their data is protected by more than just a password.
Stops Credential Theft
Passwords alone can be stolen through phishing or brute force, but 2FA blocks attackers without the second factor.
Protects Remote & Cloud Logins
With more employees working from anywhere, 2FA secures logins from untrusted networks used, even from outside the office.
Meets Compliance Requirements
Security standards, such as GDPR, HIPAA and PCI-DSS.
Flexible Options
QAM offers SMS, email, apps, tokens and biometrics to fit different needs.
User-Friendly Security
Modern 2FA methods (push notifications, QR codes) make strong security simple.
2FA with QAM
- QAM makes deploying 2FA simple and flexible for organizations of all sizes. It supports multiple authentication options so businesses can choose what works best:
SMS / Email Codes
Quick and easy setup for most users.
Authenticator Apps
Support for Google Authenticator, Microsoft Authenticator and Authy.
Quantum Authenticator
A dedicated app with push notifications, QR login and soft tokens for seamless access.
Hardware Token (YubiKey)
Strong, phishing-resistant login for high-security environments.
FIDO2 Biometric (Beta)
Passwordless authentication using fingerprint or facial recognition.
- Admins can configure policies to enforce 2FA across wired, wireless, VPN and cloud applications, all within QAM’s unified platform.
FAQs
What’s the difference between 2FA and MFA?
2FA means two layers of authentication, while MFA (Multi-Factor Authentication) can include two or more.
Is SMS 2FA secure enough?
It adds protection. The app-based or hardware-based 2FA methods are more secure since SMS can be intercepted.
Do users always need the Internet for 2FA?
Not always, hardware tokens and some apps can generate codes offline.
Can QAM enforce 2FA across all devices?
Yes, QAM integrates 2FA into wired, wireless, VPN and application logins.
Is 2FA difficult for employees to use?
No. With push notifications or authenticator apps, the process is quick and user-friendly.