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Andrax Pentester

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Linux Security — Andrax Pentester

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Linux Security

Published work tagged Linux Security.

Items3

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ArticleLinux

Cron Expressions Explained: Syntax, Examples & Gotchas (2026)

A cron expression is five fields that say when a job runs. Here is how to read them, avoid the OR, step and DST traps, and audit crontabs safely.

Syed Zada Abrar · 10 min

ArticleDefensive Security

Real-Time eBPF Kernel Telemetry & Sigma Rule Synthesis for Linux Threat Detection (2026 Masterclass)

Master real-time Linux threat detection by compiling SigmaHQ rules into AST decision trees evaluated against live eBPF kernel tracepoints (sys_enter_execve) in…

Syed Zada Abrar · 6 min

ArticleOffensive Security

Linux Binary Exploitation: A Practitioner's Guide to Buffer Overflows, ROP Chains & Modern Mitigations (2026)

Master Linux binary exploitation from stack-based buffer overflows through return-oriented programming (ROP) chains to bypassing ASLR, NX, and stack canaries —…

Syed Zada Abrar · 6 min