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Free Arizona State University course: from Linux basics to binary and kernel exploitation.

Step-by-step HackTheBox machine walkthrough videos, searchable by technique on ippsec.rocks.

Payloads and bypasses for web security: XSS, SQLi, SSRF, SSTI, deserialization and much more.

Curated list of Unix binaries that can be abused to escalate privileges, bypass restrictions or transfer files.

The most complete pentesting techniques wiki: Linux, Windows, web, cloud, AD and more.

Python programming for hackers and pentesters. Offensive tools.

Practical guide to analyze and dissect malware. Very hands-on.

Classic on binary exploitation. Buffer overflows, shellcode and more.

Red Team edition. Advanced offensive strategies used in simulations.

The bible of web pentesting. Covers all web vulnerabilities in depth.

Intensive malware analysis course. From zero to automation.

Practical ethical hacking courses at affordable prices.

Practical web security labs with progressive exercises.

Elite cybersecurity training. GPEN, GWAPT, GCIH and more certifications.

Official OffSec courses including PEN-200 (OSCP) and others.

Structured HTB courses with learning paths for different roles.

Interactive lessons on common web vulnerabilities.

Completely free and open security training materials.

Free SANS courses for cybersecurity fundamentals.

Free videos to prepare for CompTIA Security+ certification.