Rénich's Blog

security

Flaw on Fedora: Static Security and AI-Slop Analysis for Crystal

24 de octubre de 2026

Yesterday I was auditing a batch of Crystal projects on my Fedora workstation, and it hit me how much the day-to-day code review threat model has shifted.

For years, if you wrote Crystal, your static analysis workflow was straightforward: you ran the compiler for type safety and Ameba for style …

Ten + 1 Reasons to Avoid the Immutable Desktop

18 de junio de 2026

Lately, it seems the industry is aggressively pushing immutable, image-based operating systems for the desktop. Shipping a cryptographically sealed, read-only root filesystem sounds super fancy and elegant on paper, but in reality, it's a solution looking for a problem, unless you're running a smart fridge or a corporate kiosk.

Let …

Using ACLs on Fedora Like a Pro (Because sudo is for Noobs)

31 de enero de 2026

Hola! You know how sometimes you have a service user (like a bot or a daemon) that needs to access your files, but you feel dirty giving it sudo access? I mean, la neta, giving root permissions just to read a config file is like killing a fly with a …