https://www.alemasone.com/en/tags/surveillance/Recent content in Surveillance on AlemasoneHugoenSat, 19 Sep 2026 09:00:00 +0200https://www.alemasone.com/en/red-star-os-north-korea-operating-system/Fri, 14 Feb 2025 10:34:55 +0000https://www.alemasone.com/en/red-star-os-north-korea-operating-system/<div class="lead !mb-9 text-xl"> Red Star OS is North Korea’s operating system, a Linux distribution developed for internal use. Among security researchers, it is famous not for its appearance, which mimics macOS, but for a silent mechanism: <strong>it watermarks every file</strong> that passes through the computer with an identifier linked to the machine, allowing the tracking of how documents move from one person to another. </div> <p>Studying it is interesting for a specific reason: it explicitly shows how an operating system can be built around control rather than around its users. Many of the techniques it uses exist elsewhere, albeit in a more discreet form.</p>