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.
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.
- 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.
Additional threat hunting and security operations projects are in development.