After 4.5 years, there is an update to "Mobile Phone Security." In this 2026 Edition, the text is fundamentally the same, but specifics have been updated as well as answers to more questions and misconceptions that come up around safer usage of mobile phones, apps, and such.

Download it. Read it. Distro it. Take the source code and remix it. Etc. etc.

https://opsec.riotmedicine.net/downloads#mobile-phone-security-2026