https://www.jeffmixon.com/tags/security/Recent content in Security on Jeff Mixon | jeffmixon.comHugoen-usMon, 22 Jun 2026 16:04:57 -0700https://www.jeffmixon.com/post/grandma/Fri, 19 Jun 2026 00:00:00 -0700https://www.jeffmixon.com/post/grandma/How I built grandma.chat — a Next.js + AI Gateway chat app — with layered abuse defense, dual in-memory/Mongo backends, and a daily spend circuit-breaker.https://www.jeffmixon.com/post/garage-door-rolling-codes-reversed/Thu, 14 Sep 2023 00:00:00 -0700https://www.jeffmixon.com/post/garage-door-rolling-codes-reversed/A weekend that turned into a project: a clean-room software reimplementation of the Security+ and Security+ 2.0 garage-door rolling-code systems, framed as an RF reverse-engineering exercise.https://www.jeffmixon.com/post/ml-password-modeling-passgan-to-passgpt/Thu, 09 Mar 2023 00:00:00 -0800https://www.jeffmixon.com/post/ml-password-modeling-passgan-to-passgpt/A multi-year research line bridging four ML password-modeling papers — PassGAN, IWGAN, GNPassGAN, PassGPT — into operational cracking workflows, with a hashcat rule generator (pantagrule) on the operational side and Hashtopolis on the distributed-cracking side.https://www.jeffmixon.com/post/wpa-default-key-reverse-engineering/Mon, 08 Nov 2021 00:00:00 -0800https://www.jeffmixon.com/post/wpa-default-key-reverse-engineering/Why the WPA passphrase printed on the bottom of so many ISP-supplied routers isn’t actually random — a pattern, an abstract methodology, and why this kind of research matters for the defender side.