Technology Risk & Cybersecurity Analyst • Tokyo, Japan
GRC | IT Risk | Incident Response | Security Governance
Former Investment Bank Director with 15+ years of experience in financial risk governance, regulatory examination support, and internal control environments.
I focus on the intersection of technology risk, cybersecurity operations, and governance, translating technical findings into structured risk assessments, control frameworks, and escalation-ready reporting.
- Technology Risk & IT Governance (GRC)
- Incident Response & CSIRT support
- Threat Hunting & SIEM Investigation
- Control Design & Risk-Based Remediation
Cybersecurity Analyst (Intern)
Cyber Range (LOG(N) Pacific) | Feb 2026 – Present
- Conducted SIEM-based investigations using Microsoft Sentinel, Defender for Endpoint, and Azure
- Performed threat hunting aligned with MITRE ATT&CK techniques
- Analyzed endpoint telemetry across process, file, and network events
- Developed incident escalation workflows and investigation reports
- Supported vulnerability management and system hardening exercises using Tenable Nessus
Focus: Endpoint telemetry analysis & threat hunting
- Investigated Tor Browser installation, execution, and network activity
- Reconstructed timeline using Microsoft Defender Advanced Hunting (KQL)
- Identified Tor relay communication over port 9001
- Mapped findings to MITRE ATT&CK techniques
➡️ https://github.com/dan-chui/Threat-Hunt-Tor-Browser-Investigation
Focus: Security monitoring & incident investigation
- Analyzed simulated exploitation and data exfiltration scenarios
- Correlated logs and alerts to produce structured incident reports
- Demonstrates investigation workflow and escalation reasoning
➡️ https://github.com/dan-chui/SIEM-Incident-Analysis-Report
Focus: Incident response governance & workflow design
- Designed SOC Tier-1 escalation logic aligned with severity and SLA thresholds
- Built communication matrix and documentation standards
- Emphasized cross-team coordination and governance
➡️ https://github.com/dan-chui/Incident-Escalation-Playbook-Report
Focus: Technology risk & remediation lifecycle
- Designed risk-based vulnerability prioritization and tracking methodology
- Defined remediation workflows and accountability structure
- Demonstrates operational risk governance
➡️ https://github.com/dan-chui/Vulnerability-Management-Program
Focus: Risk identification & control mapping
- Developed structured risk register using Likelihood × Impact scoring
- Mapped risks to Annex A controls
- Demonstrates audit-ready governance documentation
➡️ https://github.com/dan-chui/Risk-Register
Security Operations & Investigation
SIEM Analysis · Threat Hunting · Incident Response · MITRE ATT&CK
Technology Risk & Governance
ISO/IEC 27001 · NIST CSF · IT Controls · Risk Assessment · Vulnerability Management
Tools & Platforms
Microsoft Defender XDR · Sentinel · Splunk · Tenable · Wireshark · Azure
- LinkedIn: https://www.linkedin.com/in/danchui/
- Blog: https://happy-bytes.vercel.app/
Open to roles in Technology Risk, GRC, IT Risk, CSIRT, and Security Governance (Tokyo / Hybrid / Remote)
テクノロジーリスク・サイバーセキュリティアナリスト|東京
金融機関にて15年以上、信用リスク管理、内部統制、規制対応に従事。
現在はテクノロジーリスクおよびサイバーセキュリティ分野へ専門性を拡張しています。
金融リスクとITガバナンスのバックグラウンドに加え、
Cyber Rangeにて実践的なSOC・インシデント対応トレーニングを実施。
技術的な調査結果を、リスク評価・統制・ガバナンス文書へと落とし込むことを強みとしています。
サイバーセキュリティアナリスト(インターン)
Cyber Range(LOG(N) Pacific)
- SIEM(Microsoft Sentinel, Defender for Endpoint, Azure)を用いた調査
- MITRE ATT&CKに基づく脅威ハンティング
- インシデント対応・エスカレーション設計
- エンドポイントログ分析(プロセス・ファイル・ネットワーク)
- Tor通信の分析および挙動調査
- タイムライン再構築およびATT&CKマッピング
- 攻撃シナリオの分析およびインシデントレポート作成
- SLAベースのエスカレーション設計
- 対応フローおよび文書整備
- リスクベースの優先順位付け
- 是正管理および追跡プロセス設計
- リスク評価および統制マッピング
セキュリティ運用
SIEM分析 · 脅威ハンティング · インシデント対応
テクノロジーリスク
ISO27001 · NIST CSF · IT統制 · リスク評価
ツール
Microsoft Defender XDR · Sentinel · Splunk · Tenable · Wireshark · Azure
テクノロジーリスク、GRC、ITリスク、CSIRT、セキュリティガバナンス関連ポジションを志向しています。
