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

SANS Whitepaper – Scoping Security Assessments – A Project Management Approach

PCI Data Security Standard – Penetration Testing Guidance

NIST – CUI SSP Template

GIAC – The Value of Documentation: A Useful System Security Plan Template

Illinois Department of Human Services – Cornerstone System Security Plan

Carnegie Mellon University – System Security Plan Template

The State of Maryland – System Security Plan

NIST SP 800-18 Guide for Developing Security Plans for Federal Information Systems

Department of Energy – Plan of Action and Milestones (POA&M) Training Session