FIDO2 Authenticator by Secfense is a component of the User Access Security Broker (UASB) solution that enables organizations to implement FIDO2-based authentication across their web applications. It is a phishing-resistant multi-factor authentication (MFA) solution based on the FIDO (Fast Identity Online) authentication standard, designed to provide strong, passwordless authentication for enhanced security in enterprise environments. The FIDO2 Authenticator supports the FIDO2 standard, which uses public key cryptography to provide strong, phishing-resistant authentication. It allows for passwordless or two-factor authentication methods, utilizing biometric factors, security keys, or a mobile application that transforms a user's smartphone into a FIDO2-compliant authentication device. This mobile app provides cryptographic identity confirmation similar to physical U2F/FIDO2 keys, with the cryptographic key secured within the user's phone, eliminating the need for separate hardware tokens. The FIDO2 Authenticator works in conjunction with Secfense's UASB to offer an additional layer of security for protected applications, enabling rapid deployment and scalable implementation of FIDO2 authentication across multiple applications and users within an organization.