5 Authentication Methods

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This piece of plastic tells people who you are. 




The verb authenticate originated from the Latin word authenticus, meaning genuine.

Confirming that someone is really who they claim to be has always been a problem that we humans have tried to solve.

You see, just because someone says they are Michael Jackson, it doesn't mean they are, because they could also be lying (who doesn't lie to get what they want?).

Before the advent of modern technology, various authentication methods were used to verify the identities of individuals before granting access to resources, from signatures to special passphrases.

As a child, I can remember devising specific ways of knocking on the door with my siblings and cousins to confirm each other's identities before granting access to our top-secret room.

However, knocking on digital doors requires more robust methods of accessing resources, such as your social media profile or your bank account.

Today, I will mention some authentication methods and highlight the pros and cons of each.


Passwords

We all know them, but a strong password is key. Use a password manager like 1Password or LastPass to generate and store complex, unique passwords for each account.

Security : Low

Biometric Authentication

Most smartphones offer fingerprint or facial recognition for unlocking and logging in to apps. While convenient, keep in mind it's not foolproof. 

Security : Medium

Passwordless Login


Passwordless login eliminates traditional passwords, offering secure access through biometrics, email/SMS codes, or push notifications, enhancing security and user experience while reducing support costs.

Security : Medium

Two-Factor Authentication (2FA)


This adds an extra layer by requiring a code sent to your phone or generated by an app like Google Authenticator or Microsoft Authenticator:

Security : Medium-High

Multi-Factor Authentication (MFA)


MFA goes beyond 2FA, allowing you to choose from various factors like a security key, fingerprint, or one-time code. Services like Duo Security and RSA SecurID offer MFA solutions for businesses.

Security : High

Token-based

Hardware tokens like YubiKey provide a physical key that generates a unique code for login. This is highly secure but requires purchasing and carrying the token.

Security : High


No single method is perfect. Layering your defenses with a strong password and a form of 2FA or MFA is the best approach for most accounts. Choose the method that balances security with your needs and preferences.


Resources

LastPass : Password Generator
How Biometric Authentication Works?
Sessions vs Token Authentication in 100 Seconds
Book : Zero Trust - Security Demystified
LockPickingLawyer




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