Independent guides to secure desktop operating systems: Qubes OS, Tails, Whonix, hardened Linux distros, and full disk encryption. Continuing the Secure Desktops project (est. 2015).https://secure-os.org/https://secure-os.org/articles/linux-hardening/https://secure-os.org/articles/linux-hardening/A practical Linux hardening guide built around threat models, not checklists. Covers sysctl, AppArmor, SELinux, kernel parameters, and verified boot — with clear explanations of what each measure actually protects against.Fri, 12 Jun 2026 00:00:00 GMThttps://secure-os.org/articles/full-disk-encryption/https://secure-os.org/articles/full-disk-encryption/A practical guide to full disk encryption across Linux, Windows, macOS and cross-platform tools — what it protects, what it does not, and how to get it right.Fri, 12 Jun 2026 00:00:00 GMThttps://secure-os.org/articles/luks-encryption/https://secure-os.org/articles/luks-encryption/A complete guide to LUKS2 full-disk encryption on Linux — cryptsetup commands, header backup, TPM auto-unlock, performance benchmarks, and what to do when your header is lost.Fri, 12 Jun 2026 00:00:00 GMThttps://secure-os.org/articles/most-secure-linux-distros/https://secure-os.org/articles/most-secure-linux-distros/Choosing the most secure Linux distro depends on your threat model. This guide ranks 7 secure Linux distros by what they actually protect against.Fri, 12 Jun 2026 00:00:00 GMThttps://secure-os.org/articles/qubes-os/https://secure-os.org/articles/qubes-os/A technical deep-dive into Qubes OS — the compartmentalization-based desktop OS recommended by Snowden and used by security professionals worldwide.Fri, 12 Jun 2026 00:00:00 GMThttps://secure-os.org/articles/qubes-vs-tails-vs-whonix/https://secure-os.org/articles/qubes-vs-tails-vs-whonix/A decision framework for choosing between Qubes OS, Tails, and Whonix in 2026 — using a threat model matrix that covers targeted malware, physical seizure, mass surveillance, and identity linkage.Fri, 12 Jun 2026 00:00:00 GMThttps://secure-os.org/articles/tails-os/https://secure-os.org/articles/tails-os/Tails OS is a live USB operating system that routes all traffic through Tor and leaves no trace. Learn how it works, who needs it, and its real limits.Fri, 12 Jun 2026 00:00:00 GMThttps://secure-os.org/articles/tails-usb-install/https://secure-os.org/articles/tails-usb-install/A complete how-to guide for installing Tails 7.8.1 on a USB drive — including OpenPGP signature verification, writing the image, and first-boot setup of Persistent Storage.Fri, 12 Jun 2026 00:00:00 GMThttps://secure-os.org/articles/veracrypt-guide/https://secure-os.org/articles/veracrypt-guide/A thorough, honest review of VeraCrypt 1.26 — how to create encrypted containers, hidden volumes, and whole-disk encryption on Linux, Windows and macOS. Includes real limits vs LUKS and BitLocker.Fri, 12 Jun 2026 00:00:00 GMThttps://secure-os.org/articles/whonix/https://secure-os.org/articles/whonix/Whonix uses two isolated virtual machines to route all traffic through Tor by design. No configuration errors, no IP leaks. Here's how the architecture works.Fri, 12 Jun 2026 00:00:00 GMT