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jonathonpfeiffer/README.md

Jonathon Pfeiffer's IT & Cybersecurity Portfolio 🔐

I'm an aspiring cybersecurity professional focused on Governance, Risk & Compliance (GRC), vulnerability management, and security operations.

Through hands-on projects, I've developed practical experience assessing cybersecurity risks, evaluating security controls, implementing remediation strategies, and documenting technical findings.

My portfolio demonstrates both the technical and business-risk perspectives of cybersecurity, from identifying vulnerabilities to developing risk-based remediation roadmaps.

🛡️ Governance, Risk & Compliance (GRC)

Simulated cybersecurity risk assessment of a fictional organization aligned with NIST CSF 2.0.

  • Evaluated cybersecurity control gaps across seven risk scenarios.
  • Developed a risk register using likelihood and impact scoring.
  • Prioritized remediation based on risk exposure, business impact, and implementation considerations.
  • Created an executive assessment report, detailed risk analysis, and three-year cybersecurity improvement roadmap.

⚠️ Vulnerability Management & Security Hardening

  • Conducted vulnerability assessments using Tenable.
  • Analyzed and prioritized identified vulnerabilities.
  • Implemented remediation procedures and performed follow-up validation.
  • Documented findings and remediation results.
  • Assessed Windows 11 security configurations against DISA STIG requirements.
  • Remediated 10 security findings using PowerShell and manual configuration changes.
  • Used Tenable to validate remediation effectiveness.
  • Documented before-and-after results and remediation procedures.

🚨 Threat Hunting & Security Operations

Additional threat hunting and security operations projects are in development.


🤳 Connect With Me

LinkedIn

Popular repositories Loading

  1. jonathonpfeiffer jonathonpfeiffer Public

  2. Oscorp-NIST-CSF-Assessment-Final Oscorp-NIST-CSF-Assessment-Final Public

    Simulated NIST CSF 2.0 cybersecurity risk assessment featuring risk analysis, remediation planning, and a three-year security roadmap.

  3. Vulnerability-Managment-Program-Final Vulnerability-Managment-Program-Final Public

    Hands-on vulnerability management project using Tenable to identify, prioritize, remediate, and validate security vulnerabilities.

  4. Windows-11-Stig-Remediation-Final Windows-11-Stig-Remediation-Final Public

    Hands-on Windows 11 DISA STIG security hardening using PowerShell, manual remediation, and Tenable validation.

    PowerShell