| Harold's Cheat Sheets | ||
| Harold's Cryptology Cheat Sheet | Docx | Cryptology, encode, decode, symmetric, asymentric, public-private key, hash functions (SNHU MAT 260 & MAT 230 Module 8) |
| Harold's Modular Arithmetic Cheat Sheet | Docx | Modular arithmetic: b = a (mod m) (SNHU MAT260) |
| Securing Your MS Windows SOHO Network | PPTX | My MS PowerPoint presentation, 8 January 2002. |
| Cybersecurity Models | ||
| The PCMM | My Product Security Maturitry Model | |
| The SSDLC | see below | My Proactive Cybersecurity: Secure Systems Development Life Cycle practices matrix |
| MITRE ATT&CK Matrix | see below | Reactive Cybersecurity: Industry standard for analyzing a cyber attack |
| AP | Advanced Placement (AP) | |
| AP Cybersecurity | An AP career course on cybersecurity launching in 2026-27. |
SSDLC: Secure Systems Development Life Cycle Matrix
MITRE ATT&CK Matrix
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Last updated 28 October 2025