# WebAuthn specification editor and software engineer

Source: https://startwithidentity.com/experts/emil-lundberg/
Last updated: 2026-09-20
License: content by Start with Identity. Cite the source URL.

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## Bio

Emil Lundberg is a software engineer at Yubico and an editor of the W3C Web Authentication specification. He also maintains java-webauthn-server, the open-source library many JVM applications use to implement the relying-party side of [WebAuthn](https://startwithidentity.com/standards/webauthn-fido2/).

Profile built from public W3C and project records.

## Where their work shows up

Writing the specification and maintaining a conformant implementation of it is an unusually useful combination: the ambiguities that survive review surface immediately in code, and the fixes go back into the text. Attestation handling, credential-ID management, and the relying-party verification steps are where most WebAuthn integrations go wrong, and a well-maintained library is what keeps that from being every team's problem. See [Yubico](https://startwithidentity.com/vendors/mfa/yubico/) and the [best phishing-resistant MFA](https://startwithidentity.com/rankings/best-phishing-resistant-mfa/) ranking.