#linux | Qezir

Linux for Security: Your First 20 Commands

The essential Linux commands every security beginner needs - navigation, files, processes, and networking. No fluff, just what you'll actually use.

tutorial fundamentals ground-up +1

Jan 30, 2026 · 10 min read

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Tutorial

INFO

Users, Permissions, and Why Root Is Dangerous

How Linux access control works - users, groups, file permissions, SUID, and sudo. Understanding this is understanding half of privilege escalation.

tutorial fundamentals ground-up +1

Jan 30, 2026 · 9 min read

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Research

CRITICAL

The XZ Utils Backdoor: One Year Later, What Have We Learned?

A year after the discovery of the XZ Utils supply chain attack, examining what changed in open source security and what still keeps maintainers up at night.

supply-chain open-source backdoor +1

Mar 29, 2025 · 5 min read

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