Justin Richer is a security architect, software engineer, standards editor, and systems designer with over two decades of industry experience. He is the lead author of OAuth2 In Action and contributor to OAuth 2.0 and OpenID Connect. Justin is the editor of a variety of standards including GNAP, HTTP Message Signatures, and OAuth extensions RFC7591, RFC7592, RFC7662, and RFC9396. Justin is a co-author to NIST SP 800-63, FIPS201, and NIST SP 800-217.