This walks you through MITRE ATT&CK based red teaming with a focus on methodology over tools. You get the full attack lifecycle from reconnaissance through exfiltration, practical tables for privilege escalation checks on Windows and Linux, defense evasion principles like using LOLBins and blending with normal traffic, and a solid framework for reporting detection gaps. The ethical boundaries section is actually useful, not just CYA boilerplate. If you're simulating adversaries to test defenses or writing post-engagement reports, the structured approach to documenting what should have detected each technique and why it didn't is worth the price of admission alone.
npx skills add https://github.com/davila7/claude-code-templates --skill red-team-tactics