Education and Professional Experience

• 2016

  B.A. Keio University

• 2018

  Master of Public Policy, Graduate School of Public Policy, the University of Tokyo

• 2018-
  2020

  Research Associate, Asia Pacific Initiative.

• 2020-
  2021.3

  Researcher, Emerging Security Challenges Division / Economic Security Policy Division, Foreign Policy Bureau, Ministry of Foreign Affairs.

• 2021-

  Research Fellow, National Institute for Defense Studies

Selected Publications

Japanese

• 「顕教」と「密教」のあいだ ― 近年の欧米諸国による政府のサイバー安全保障体制改革の潮流
  Between Secrecy and Publicity－Emerging Trends of National Cybersecurity Organizations Reforms in the Western Countries

  Monthly Public Safety Review, Vol.30, No.11, 44-55, March 2024 [in Japanese]

• 対外工作機関としての中国公安部——公開情報分析から辿る、近年の対外的な工作活動とその内在的論理
  The Chinese Ministry of Public Security as an External Influence Agency: Recent Covert Operations and Their Internal Logic as Traced through Open-Source Analysis

  NIDS Commentary, No.371, 1-15, April 2025 [in Japanese](Co-authored with Yohei Goto)

• サイバー攻撃対処における「攻撃キャンペーン概念」と「コスト賦課アプローチ」―近年の米国政府当局によるサイバー攻撃活動への対処事例の考察から
  Concepts of Cyber Campaigning and Cost-Imposition Strategy in/through Cyberspace: Theoretical and Empirical Perspective

  NIDS Commentary, No.346, 1-28, August 2024 [in Japanese](Co-authored with Hayato Sasaki)

• 民主主義国家のサイバー軍による攻勢的サイバー作戦能力の整備と運用――米軍とオランダ軍における「二重の統合」の過程に着目した比較事例研究
  Military Cyber Forces (MCF) as Integrator of Offensive Cyber in Democracies: Comparative Studies of the ‘Dual Integration’ mechanism through the U.S. and Netherlands MCF

  Security and Strategy, Vol.4, No.2, 177-201, March 2024 [in Japanese]

• パブリックアトリビューションの「拡散」と『多様化」 ――政策当局間の「多様化」の国際比較研究
  Diffusion and Diversification in Public Attribution Policies of Cyber Operations: Comparative Attribution Politics in the US Instrumentation and EU Judicialization

  Security and Strategy, Vol.3, No.2, 63-83, March 2023 [in Japanese]

• 書評論文：志田淳二郎著『ハイブリッド戦争の時代 ――狙われる民主主義』
  Book Review: Shida Junjiro, Hybrid War: Enduring Threats to Democracy

  The Journal of International Security, Vol. 50, No.2, 122-126, September 2022

• ロシアのウクライナ侵攻と米英両国のインテリジェンス公表政策―情報機関の'ジレンマ'と2014年以降の安全保障協力の'系譜'
  Weaponized Disclosure of Intelligence in the Russia-Ukraine War: Disclosure Dilemma and Hidden Inheritance from Post-2014 Transatlantic Security Cooperation

  NIDS Commentary, No.224, 1-12, May 2022

• 国家のサイバー攻撃とパブリック・アトリビューション―ファイブ・諸国のアトリビューション連合とSolarWinds事案対応
  Public Attribution to State-sponsored Cyber activities: Five Eyes' Attribution Coalition and SolarWinds Incident Response

  NIDS Commentary, No.179, 1-15, July 2021

English

• Weaponized Disclosure of Intelligence in the Russia-Ukraine War: Disclosure Dilemma and Hidden Inheritances from Post-2014 Transatlantic Security Cooperation

  NIDS Commentary, No.224, October 2023 [in English version: with citation updates from the original Japanese edition in May 2022]

Presentation and Conference Paper

Japanese

• 情報機関/法執行機関と市民社会の「OSINT コミュニティ」―マレーシア航空MH17 便撃墜事件をめぐる国際共同捜査の事例から
  （Knowledge Co-Production between Intelligence/Law Enforcement Agencies and Civil Society OSINT

  The Japan Association of International Security（JAIS） Annual Convention 2024, Dec 7, 2024. [in Japanese]

• CTIの生態系/市場と対峙する政府のインテリジェンス
  Adaptation of the Government Intelligence vis-a-vis Emergence of the Cyber-threat intelligence(CTI) ecosystems/market.

  NIDS Workshop on the Opportunities and Challenges of Multi-stakeholder Governance on Cyber-threat intelligence, March 1, 2024 [In Japanese]

• 情報化時代の「コバート・アクション（covert action）」――国家による攻撃的サイバー作戦をめぐる課題の歴史的な連続性
  Covert Action in the Information Age: Challenges of the State-sponsored Offensive Cyber Operations from a Historical Perspective.

  Conference Paper presented at the Japan Association of International Relations（JAIR） Annual Convention 2022, Octber 30, 2022

• サイバー・アトリビューションをめぐる「政策」と「政治」—2010 年代後半における各国政府の対処様式と目的の多様化
  Policy and Politics of Cyber Attribution：Divergence by Internationalization and Marketization

  Presentation at the Cyber Security Legislation Society, July 30, 2022

English

• Disruptive Counter-Cyber Operations Leveraging Trilateral Assets in Indo-Pacific?

  Conference Paper presented at CSBA Trilateral Strategic Dialogue, April 21, 2021

Teaching Experience / Other Professional Appointments

• A Contributing Expert to the SNV Cyber Diplomacy Working Group ‘Cyber Norms on Attribution’.

  National Institute for Defense Studies, September 2022 - Present

  * Discussion as a working group member helps to formulate the following report: Christina Rupp and Alexandra Paulus, Official Public Political Attribution of Cyber Operations: State of Play and Policy Options（Stiftung Neue Verantwortung [SNV] , Berlin, Germany, October 2023）

• Lecturer / Assistant Supervisor to the MA thesis writing by a JSDF colonel for NIDS-GRIPS Strategic Studies Program,

  National Institute for Defense Studies, September 2022 – September 2023.

• Lecturer on Emerging Challenges of National Security for NIDS Special Course

  National Institute for Defense Studies, July 2021 –

• Lecturer on Basic of Cyber Defense Policy at the NIDS Career-Track Personnel Training Course,

  National Institute for Defense Studies, May 2021 –