Secfense is a proxy-based authentication platform that enables enterprises to deploy phishing-resistant multi-factor authentication (MFA), passkeys, Windows Hello, and microauthorizations across every application - without code changes or system replacements. Acting as a universal authentication layer: Secfense sits between users and applications, upgrading the security of all systems - even legacy or custom-built ones - to modern standards such as FIDO2, passkeys, or Windows Hello. Unlike traditional IAM solutions that require rewrites or proprietary integrations, Secfense works as a vendor-neutral overlay that brings passwordless, phishing-resistant login to every system. Most enterprises still rely on passwords or have partial MFA coverage. Legacy and on-premises applications and SSO often can't support modern authentication methods, and rewriting them is expensive and risky. As a result, more than 80% of breaches continue to originate from compromised credentials. Meanwhile, emerging regulations such as DORA and NIS2 mandate phishing-resistant authentication, something existing IAM tools alone cannot easily achieve across diverse applications. Secfense closes this gap. Operating as a reverse proxy, it intercepts login requests and dynamically injects FIDO2-based authentication - including passkey prompts, biometric checks, or hardware key authentication - before passing validated sessions to the protected applications. The entire process is transparent to both users and applications: No code changes, no app modifications, and no disruption to operations. Secfense seamlessly integrates with existing identity providers, including Entra ID, Okta, Ping, and others, via SAML and OIDC protocols. Rather than replacing these systems, Secfense extends them with phishing-resistant capabilities while allowing organizations to fully control their identity architecture. Trusted by banks, insurers, and other regulated industries, Secfense delivers the fastest, most practical path to secure, compliant, and passwordless authentication across the enterprise - reducing deployment times from months to weeks and cutting IAM modernization costs by up to 87%.