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Kjean13/README.md

Jean Koumou

JKM

Cybersecurity Engineering Student | Blue Team | DFIR | Detection Engineering

Portfolio · LinkedIn · GitHub · Email

                     ======================================================================
                      BLUE TEAM | DFIR | CYBER THREAT INTELLIGENCE | DETECTION ENGINEERING 
                     ======================================================================

Profile

  • Cybersecurity engineering student at ESIEA, building a profile around vulnerability analysis, defensive tooling and security automation.
  • Cyber Threat Intelligence Analyst at ******, working on digital evidence, suspicious infrastructure, IOC enrichment and structured reporting.
  • Hands-on experience with Windows, Linux, Active Directory, Microsoft 365, SIEM deployment and incident triage.
  • Seeking a 36-month cybersecurity apprenticeship with a 2 weeks company / 2 weeks school schedule in France.

Featured Projects

Offline Windows and Active Directory investigation toolkit with a CLI and local web interface.

  • EVTX, JSON, CSV, CEF, XML, Syslog and ZIP ingestion
  • deterministic detections and correlations
  • timeline reconstruction, attack-path analysis and exposure scoring
  • HTML, JSON, CSV, ATT&CK Navigator and Mermaid exports

Python EVTX FastAPI MITRE ATT&CK DFIR

Governance CLI for Sigma and detection catalogs, built as a quality-control layer around detection content before merge or release.

  • catalog quality scoring across metadata, noise, structure, ATT&CK mapping, maintainability, weakness and documentation
  • semantic duplicate detection based on event-surface similarity rather than lexical YAML similarity
  • baseline vs candidate comparison to surface regressions before release
  • prioritized explanations and remediation guidance for weak rules
  • HTML, Markdown, JSON, SARIF and ATT&CK Navigator exports
  • CI-ready quality gates for pull requests and detection catalog releases

Python Sigma MITRE ATT&CK Detection Engineering CI/CD

Technical Stack

Python PowerShell Bash Linux Windows Docker Git

  • Detection and investigation: SIEM, EDR, Sysmon, Sigma, MITRE ATT&CK, EVTX, IOC analysis
  • Infrastructure: Active Directory, Windows Server, Linux, Microsoft 365, Entra ID, Docker, Ansible
  • Network and reconnaissance: TCP/IP, DNS, Wireshark, Nmap, Shodan, Suricata, Zeek
  • Security platforms: Splunk, Wazuh, Elastic, OpenCTI

Current Focus

  • Active Directory forensics and attack-path reconstruction
  • SOC investigation and SIEM workflows
  • Detection engineering and rule quality
  • Sigma catalog governance and CI quality gates
  • CTI, IOC enrichment and incident reporting

Training

  • Cisco CyberOps: SOC Operations
  • NIST Cybersecurity Framework 2.0
  • CyberDefenders

Pinned Loading

  1. ADFT ADFT Public

    Active Directory Forensic Toolkit : Detect & reconstruct AD attacks from Windows event logs (EVTX)

    Python 51 2

  2. rulescope rulescope Public

    Governance engine for Sigma detection catalogs. Semantic duplicate detection, weakness scoring, ATT&CK coverage, and CI quality gates.

    Python

  3. aiagent-detection-rules aiagent-detection-rules Public

    Detection rules for the Claude Code source leak : 16 Sigma rules, Splunk, Elastic, YARA. Lab-validated on GOAD Light DC02.

    Shell 3

  4. goad-light-deployment goad-light-deployment Public

    Deploying Orange Cyberdefense's GOAD-Light on VirtualBox | step-by-step guide with troubleshooting and detection stack

    3 1