<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:content="http://purl.org/rss/1.0/modules/content/"><channel><title>System-Security on Cypherpunk School 101</title><link>https://cypherpunkschool.com/categories/system-security/</link><description>Recent content in System-Security on Cypherpunk School 101</description><generator>Hugo -- 0.152.2</generator><language>en-us</language><lastBuildDate>Tue, 14 Oct 2025 00:00:00 +0000</lastBuildDate><atom:link href="https://cypherpunkschool.com/categories/system-security/index.xml" rel="self" type="application/rss+xml"/><item><title>Week 11a: Why System Hardening Matters</title><link>https://cypherpunkschool.com/lessons/week-11a/</link><pubDate>Tue, 14 Oct 2025 00:00:00 +0000</pubDate><guid>https://cypherpunkschool.com/lessons/week-11a/</guid><description>Understand why system hardening is critical and learn the foundational principles of defense-in-depth security architecture</description></item><item><title>Week 11b: MAC Systems &amp; Security Auditing</title><link>https://cypherpunkschool.com/lessons/week-11b/</link><pubDate>Tue, 14 Oct 2025 00:00:00 +0000</pubDate><guid>https://cypherpunkschool.com/lessons/week-11b/</guid><description>Understand Mandatory Access Control (MAC) vs Discretionary Access Control (DAC), and audit your system security with Lynis</description></item><item><title>Week 11c: Kernel Hardening &amp; AppArmor Profiles</title><link>https://cypherpunkschool.com/lessons/week-11c/</link><pubDate>Tue, 14 Oct 2025 00:00:00 +0000</pubDate><guid>https://cypherpunkschool.com/lessons/week-11c/</guid><description>Harden the Linux kernel with sysctl parameters and create custom AppArmor profiles to confine applications</description></item><item><title>Week 11d: Firejail Sandboxing &amp; Defense Framework</title><link>https://cypherpunkschool.com/lessons/week-11d/</link><pubDate>Tue, 14 Oct 2025 00:00:00 +0000</pubDate><guid>https://cypherpunkschool.com/lessons/week-11d/</guid><description>Master application sandboxing with Firejail and learn when to use each hardening tool</description></item></channel></rss>