An enterprise wants to improve its security posture and reduce helpdesk costs associated with credential resets. The security team decides to eliminate traditional passwords entirely to protect against phishing, credential stuffing, and password spray attacks. Which authentication method should the organization implement to completely remove passwords from the user sign-in process?

Passwordless authentication: ### What Passwordless Authentication Is **Passwordless authentication** is a modern authentication method that verifies user identity without requiring a traditional password or passphrase during sign-in. Instead of relying on a shared secret stored in a database, it leverages asymmetric public-key cryptography combined with something the user has (such as a device or hardware token) and something the user is or knows locally (such as biometrics or a device PIN). ### How It Meets the Requirements - **Eliminating Password-Based Attacks**: Because no passwords exist or travel across the network, common threats like **phishing**, **credential stuffing**, **password spray**, and **keystroke logging** are completely mitigated. - **Reducing Helpdesk Overhead**: Organizations experience significantly fewer support tickets related to expired passwords, locked accounts, and manual password resets. - **Strong Identity Verification**: Passwordless solutions like **Windows Hello for Business**, the **Microsoft Authenticator app**, and **FIDO2 security keys** fulfill multi-factor authentication (MFA) requirements natively in a single, seamless user step. ### Key Advantages and Capabilities - **Phishing Resistance**: Standards like **FIDO2 / WebAuthn** cryptographically bind the credential to the specific domain, preventing users from entering credentials on fake websites. - **Enhanced User Experience**: Users sign in faster and more conveniently using biometrics (fingerprint or facial recognition) or a hardware token. - **True Multi-Factor Security**: Satisfies two distinct authentication factors (possession of the device/key + biometric/PIN) without typing complex passwords. - **Lower Administrative Costs**: Reduces IT helpdesk burdens associated with recurring password maintenance and lifecycle management. ### Why This Is Optimal While other methods manage or protect passwords, **passwordless authentication** is the only method that completely eliminates the password as a point of failure, providing the strongest protection against credential theft while streamlining the sign-in experience.