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Kjean13/README.md

Jean K.

Cybersecurity student focused on Blue Team, SOC operations, Active Directory security, DFIR and detection engineering.

Portfolio · LinkedIn · GitHub · Email


Highlights

  • Active Directory forensics - event ingestion, timeline reconstruction, correlation and structured reporting.
  • Sigma rule governance - duplicate detection, weakness scoring, ATT&CK coverage and CI-friendly quality checks.
  • Detection labs - practical environments for validating logs, alerts, attack traces and SIEM investigation workflows.
  • Microsoft 365 / Entra ID administration - user management, Conditional Access, workstation hardening and basic incident triage.
  • Defensive infrastructure - lab deployment, monitoring stack documentation and security tooling around Windows/Linux environments.

Projects

  • ADFT - Active Directory Forensic Toolkit for Windows event ingestion, correlation, timeline reconstruction and reporting.
    Repository

  • RuleScope - Sigma Rule Governance CLI for rule quality, catalog hygiene, duplicate detection and ATT&CK coverage.
    Repository

  • GOAD-Light Deployment - deployment guide for a vulnerable Active Directory lab with a defensive monitoring stack.
    Repository


Stack recap

  • Languages: Python, PowerShell, Bash
  • Systems: Linux, Ubuntu, Windows, Docker
  • Security: Splunk, Wazuh, Elastic, Wireshark, Suricata, Zeek, OpenCTI
  • Cloud: Microsoft 365, Entra ID, Azure, Intune

Current Focus

  • Active Directory security
  • DFIR methodology
  • SOC investigation
  • Detection engineering
  • SIEM workflows
  • Infrastructure hardening

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