CMMC Level 3 Assessment Guide

Institute for Security and Open Methodologies – The Open Source Security Testing Methodology Manual

CMMC Level 2 Assessment Guide

CMMC Level 1 Self-Assessment Guide

NIST SP 800-171A Assessing Security Requirements for Controlled Unclassified Information

Open Web Application Security Project (OWASP) – Testing Tools

Open Web Application Security Project (OWASP) – Free for Open Source Application Security Tools

Open Web Application Security Project (OWASP) – Testing Guide v4

FedRAMP – Penetration Test Guidance

The Penetration Testing Execution Standard