Here's a list of some of my research and other writings. Generally speaking, these have focused on authentication & authorization, Apple and Google platform security (macOS, iOS, Android, Chrome OS), passwordless authentication (WebAuthn, FIDO2), zero trust networks, or a wee bit of applied cryptography. I'm also writing a book called Passwordless Authentication for No Starch Press. For more info, feel free to check out my résumé.