Established in 2026
SPIRAL

Center for Security Practice, Intelligence, Research, and Advanced Learning

Research, Education, and Practice—Shaping the Spiral of Cybersecurity Evolution.

Systems in Operation

Facts & Figures

Our Achievements at a Glance

Research

# Peer-reviewed Papers 275papers 1997–2026
# Presentations 653presentations 1997–2026

Education

Master's Degree Recipients 292graduates Since 2002
Doctoral Degree Recipients 55graduates 1990–2026

Practice

IoT Threat Intelligence Sharing 50countries294organizations Apr. 2015–Sep. 2026
IoT Device Security Testing 240Kusers400Ktests Feb. 2022–Sep. 2026
Message

Message from the Director

Toward the future of cybersecurity.

Director Katsunari Yoshioka

Cybersecurity has become one of the most critical challenges facing the social infrastructure that underpins economic activity, public services, and our everyday lives. Cyberattacks are becoming increasingly diverse and sophisticated, ranging from state-sponsored campaigns to attacks exploiting artificial intelligence. Their impact extends far beyond individual companies and organizations, affecting society as a whole. Ensuring the security of cyberspace and the physical spaces closely interconnected with it requires technology, people, and society to work together. No single technology or organization can address these challenges alone.

Yokohama National University has built a long-standing record of research and achievement in information and physical security, while nurturing and sending many talented professionals into society through collaboration among industry, government, and academia. Building on this foundation, the Center was established to bring together the knowledge and expertise accumulated across the University and to address the complex challenges of cybersecurity through a multidisciplinary approach.

The Center's activities are organized around four laboratories: the Cybersecurity Research and Practice Lab, the Next-Generation Cryptography Lab, the Advanced Practical Education Lab, and the Social Co-creation Lab. Each lab advances its own area of expertise while working closely with the others, creating a continuous cycle in which knowledge gained through research is brought into education, talent developed through education is connected to practice, and challenges identified through practice are fed back into research.

This cycle embodies the “SPIRAL” in the Center's name—the spiral of continuous evolution. In a field where threats are constantly changing, there is no single, final answer. We believe that continuously cycling between research, education, and practice, and striving toward new heights one step at a time, is what enables us to sustainably support the security of society.

Leaders who have shaped their respective fields, researchers and practitioners confronting cyber threats on the front lines, and a new generation of emerging researchers who will shape the future of Japan have joined the Center in support of this vision. Through collaboration with people who bring diverse expertise and experience, we seek to open up new possibilities for research, education, and practice.

We aspire to be a place of co-creation, working together not only with researchers and students across the University, but also with industry, government, and our local community. We welcome inquiries and opportunities for collaboration in cybersecurity, including joint research, technical consultation, and education and talent development.

Together, we will contribute to building a safe, secure, and trusted society.

Katsunari Yoshioka
Director, Center for Security Practice, Intelligence, Research, and Advanced Learning (SPIRAL)

News

News & Updates

Activities, Events & News

2026.10.1 News The Center for Security Practice, Intelligence, Research, and Advanced Learning (SPIRAL) has been established at Yokohama National University.
2026.9.30 News Yokohama National University has been selected for JST’s INSIGHT Program. SPIRAL will also participate in the program.
2026.9.18 News Prof. Taichi Murayama's research proposal has been selected for the JST PRESTO program.
2026.9.8-9 Event The Institute of Advanced Sciences at Yokohama National University hosted the IoT Security Forum 2026, which attracted a large audience. A total of 1,315 people registered for the event.
2026.6.30 News Yokohama National University has entered into a comprehensive partnership agreement with the U.S.-based SANS Institute. Through this agreement, we will strengthen our collaboration in practical cybersecurity education and talent development.
About

Organization

The Center’s activities are organized around four laboratories. The Advisory Board brings together expertise from diverse fields and provides strategic guidance on the Center’s direction. The Support Members provide the foundation for the Center’s activities, supporting and enabling its research, education, and practical initiatives.

The Center for Security Practice, Intelligence, Research, and Advanced Learning (SPIRAL)
The Advisory Board The Support Members
CyRaP Lab
(Cybersecurity Research and Practice Lab)
NexCrypt Lab
(Next-Generation Cryptography Lab)
CyAPEX Lab
(Cybersecurity Advanced Practical Education and eXpertise Lab)
CyLINK Lab
(Cybersecurity Linkage, Innovation, Networking and Knowledge-Sharing Lab)
Members

Our Members

CyRaP Lab
(Cybersecurity Research and Practice Lab)

As the Center’s largest laboratory, the CyRaP Lab (Cybersecurity Research and Practice Lab) leads cutting-edge research at the intersection of cybersecurity and AI. The Lab also undertakes activities that contribute to both research excellence and organizational security, including building secure research and educational environments, supporting campus security operations—including incident response support by student teams—and developing research security guidelines.

By bringing together leading researchers and practitioners from universities, public research institutes, and industry in Japan and abroad, as well as emerging researchers who will shape the next generation, the Lab aims to generate world-leading research outcomes.

NexCrypt Lab
(Next-Generation Cryptography Lab)

The NexCrypt Lab (Next-Generation Cryptography Lab) leads cutting-edge research on next-generation cryptography and its applications, including post-quantum cryptography, which forms a fundamental foundation of the information society.

Looking ahead to emerging threats arising from the digital transformation of society and advances in computing technologies, the Lab aims to develop cryptographic technologies that provide the security required for future information systems and social infrastructure, and to translate these technologies into real-world applications.

CyAPEX Lab
(Cybersecurity Advanced Practical Education and eXpertise Lab)

The CyAPEX Lab (Cybersecurity Advanced Practical Education and eXpertise Lab) promotes the development of highly skilled cybersecurity professionals through practical learning based on cutting-edge research and an educational curriculum that brings together expertise from within and beyond the University.

The Lab also engages leading practitioners with extensive experience in industry–academia collaboration, cyber exercises, and CTFs, providing students with the knowledge, technical skills, and decision-making capabilities required in real-world settings. Through these efforts, the Lab pursues truly practical cybersecurity education that prepares the next generation of professionals to address real-world challenges.

CyLINK Lab
(Cybersecurity Linkage, Innovation, Networking and Knowledge-Sharing Lab)

The CyLINK Lab (Cybersecurity Linkage, Innovation, Networking and Knowledge-Sharing Lab) works to bring domestically developed security intelligence and technologies arising from outstanding research into society and create new value through international standardization, intellectual property development, commercialization, partnerships, and outreach and communication.

With leading industry professionals participating in its activities, the Lab seeks to connect university-developed security technologies with the needs of society and build mechanisms for maximizing their impact and returning their value to society.

Members

Director

Advisory Board

3 members
  • Tsutomu MatsumotoAdvisor
    Distinguished YNU ProfessorNational Institute of Advanced Industrial Science and Technology (AIST)
  • Koji NakaoAdvisor
    IMS Visiting ProfessorNational Institute of Information and Communications Technology (NICT)
  • Motonari TanabuAdvisor
    Professor

CyRaP Lab
(Cybersecurity Research and Practice Lab)

44 members

As the Center’s largest laboratory, the CyRaP Lab (Cybersecurity Research and Practice Lab) leads cutting-edge research at the intersection of cybersecurity and AI. The Lab also undertakes activities that contribute to both research excellence and organizational security, including building secure research and educational environments, supporting campus security operations—including incident response support by student teams—and developing research security guidelines.

By bringing together leading researchers and practitioners from universities, public research institutes, and industry in Japan and abroad, as well as emerging researchers who will shape the next generation, the Lab aims to generate world-leading research outcomes.

  • Yin Minn Pa PaHead of Laboratory
    IMS Associate Professor
  • Katsunori Okajima
    Professor
  • Keisuke Shima
    Professor
  • Shinichi Shirakawa
    Professor
  • Takashi Tomii
    Professor
  • Tatsunori Mori
    Professor
  • Toshiya Shimura
    Associate Professor
  • Ryoji Tanabe
    Associate Professor
  • Naoki Yoshida
    Assistant Professor
  • IMS Assistant Professor
  • Mitsuaki Akiyama
    IMS Visiting ProfessorNTT, Inc.
  • Daisuke Inoue
    IMS Visiting ProfessorNational Institute of Information and Communications Technology (NICT)
  • Kazumasa Omote
    IMS Visiting ProfessorUniversity of Tsukuba
  • Tatsuya Mori
    IMS Visiting ProfessorWaseda University
  • Takahiro Kasama
    IMS Visiting Associate ProfessorNational Institute of Information and Communications Technology (NICT)
  • Masaki Shimaoka
    IMS Visiting Associate ProfessorSECOM CO., LTD.
  • Takeshi Sugawara
    IMS Visiting Associate ProfessorThe University of Electro-Communications
  • Rui Tanabe
    IMS Visiting Associate ProfessorJuntendo University
  • Junichi Sakamoto
    IMS Visiting Assistant ProfessorNational Institute of Advanced Industrial Science and Technology (AIST)
  • Riku Aoto
    IMS Visiting Researcher
  • Yamato Kawaguchi
    IMS Visiting Researcher
  • Junnosuke Kushibiki
    IMS Visiting ResearcherMIXI, Inc.
  • Kazuki Takada
    IMS Visiting ResearcherNational Institute of Information and Communications Technology (NICT)
  • Satoshi Hara
    IMS Visiting ResearcherFUJI SOFT INCORPORATED
  • Shota Fujii
    IMS Visiting Researcher
  • Akira Fujita
    IMS Visiting ResearcherNational Institute of Information and Communications Technology (NICT)
  • Nobuyo Fujiwara
    IMS Visiting Researcher
  • Daisuke Makita
    IMS Visiting ResearcherNational Institute of Information and Communications Technology (NICT)
  • Kosuke Murakami
    IMS Visiting ResearcherKDDI Research, Inc.
  • Takeshi Yagi
    IMS Visiting ResearcherNTT, Inc.
  • Paul Sebastian Ziegler
    IMS Visiting ResearcherReflare UG, Japan
  • Hiroaki Takayama
    Adjunct Researcher
  • Yuichi Hikosaka
    Adjunct Researcher
  • Yohei Yamaguchi
    Adjunct Researcher
  • Hirotaka Muramatsu
    Technical Assistant
  • Michel van Eeten
    IMS Visiting ProfessorDelft University of Technology
  • Jean-Yves Marion
    IMS Visiting ProfessorUniversity of Lorraine
  • Carlos Hernandez Ganan
    IMS Visiting Associate ProfessorDelft University of Technology
  • Anna Maria Mandalari
    IMS Visiting Associate ProfessorUniversity College London (UCL)
  • Ricardo Julio Rodríguez Fernández
    IMS Visiting Associate ProfessorUniversity of Zaragoza
  • Rolf van Wegberg
    IMS Visiting Associate ProfessorDelft University of Technology
  • Simon Edward Parkin
    IMS Visiting Assistant ProfessorDelft University of Technology
  • Savvas Zannettou
    IMS Visiting Assistant ProfessorDelft University of Technology
  • Daniel Uroz
    IMS Visiting ResearcherIndraMind

NexCrypt Lab
(Next-Generation Cryptography Lab)

11 members

The NexCrypt Lab (Next-Generation Cryptography Lab) leads cutting-edge research on next-generation cryptography and its applications, including post-quantum cryptography, which forms a fundamental foundation of the information society.

Looking ahead to emerging threats arising from the digital transformation of society and advances in computing technologies, the Lab aims to develop cryptographic technologies that provide the security required for future information systems and social infrastructure, and to translate these technologies into real-world applications.

  • Junji ShikataHead of Laboratory
    Professor
  • Koichi Ichige
    Professor
  • Yasutaka Fujimoto
    Professor
  • Tomoyuki Horikiri
    Professor
  • Shingo Sato
    Specially Appointed Lecturer
  • Toi Tomita
    Specially Appointed Assistant Professor
  • CHEN Jiawei
    IMS Assistant Professor
  • JO HYUNGROK
    IMS Assistant Professor
  • SHANG ZEHUA
    IMS Assistant Professor
  • XU Haoyuan
    IMS Visiting Professor
  • Keisuke Hara
    IMS Visiting Associate ProfessorThe University of Osaka

CyAPEX Lab
(Cybersecurity Advanced Practical Education and eXpertise Lab)

10 members

The CyAPEX Lab (Cybersecurity Advanced Practical Education and eXpertise Lab) promotes the development of highly skilled cybersecurity professionals through practical learning based on cutting-edge research and an educational curriculum that brings together expertise from within and beyond the University.

The Lab also engages leading practitioners with extensive experience in industry–academia collaboration, cyber exercises, and CTFs, providing students with the knowledge, technical skills, and decision-making capabilities required in real-world settings. Through these efforts, the Lab pursues truly practical cybersecurity education that prepares the next generation of professionals to address real-world challenges.

  • Takayuki SasakiHead of Laboratory
    Associate Professor
  • Tomohiro Fujii
    Professor
  • Ko Yamamoto
    Professor
  • Taichi Murayama
    Assistant Professor
  • Naoki Kuzuya
    Specially Appointed Associate Professor
  • Kento Uchida
    Specially Appointed Assistant Professor
  • Masashi Eto
    IMS Visiting ProfessorNational Graduate Institute for Policy Studies (GRIPS)
  • Kana Shinoda
    IMS Visiting ResearcherZESUROKU Inc.
  • Yoshinori Takesako
    IMS Visiting ResearcherKamiyama Marugoto College of Design, Engineering and Entrepreneurship
  • Nobuhiro Tsuji
    IMS Visiting ResearcherSoftBank Corp.

CyLINK Lab
(Cybersecurity Linkage, Innovation, Networking and Knowledge-Sharing Lab)

15 members

The CyLINK Lab (Cybersecurity Linkage, Innovation, Networking and Knowledge-Sharing Lab) works to bring domestically developed security intelligence and technologies arising from outstanding research into society and create new value through international standardization, intellectual property development, commercialization, partnerships, and outreach and communication.

With leading industry professionals participating in its activities, the Lab seeks to connect university-developed security technologies with the needs of society and build mechanisms for maximizing their impact and returning their value to society.

  • Masanori YasumotoHead of Laboratory
    Professor
  • Seiji Manabe
    Professor
  • Aya Takagi
    Associate Professor
  • Hidetoshi Ohno
    IMS Associate Professor
  • Yuki Shimotani
    IMS Associate Professor
  • Haruki Ishikawa
    IMS Assistant Professor
  • Ayako Komatsu
    IMS Visiting ProfessorNotre Dame Seishin University
  • Shunichi Hienuki
    IMS Visiting Associate ProfessorCentral Research Institute of Electric Power Industry
  • Yu Arai
    IMS Visiting ResearcherIndependent Body to Watch Japan Proactive Cyber Defense Actions
  • Yuji Ukai
    IMS Visiting ResearcherPresident and CEO, FFRI Security, Inc.
  • Michio Uyama
    IMS Visiting ResearcherMUFG Bank, Ltd.
  • Tomoki Kimura
    IMS Visiting ResearcherInnovation Platform Agency, Japan (IPA)
  • Hironobu Fukaya
    IMS Visiting ResearcherThe Yomiuri Shimbun Holdings
  • Takayoshi Hojo
    IMS Visiting ResearcherNishimura & Asahi (Gaikokuho Kyodo Jigyo)
  • Hiroaki Yamaoka
    IMS Visiting ResearcherYakumo Law Office

The Support Members

6 members
  • Tomoko Ishidate
    Adjunct Researcher
  • Toshiro Yamamoto
    Adjunct Researcher
  • Yoshiko Ejima
    Technical Assistant
  • Yukiko Sugiyama
    Technical Assistant
  • Mio Narimatsu
    Technical Assistant
  • Yumi Marutani
    Technical Assistant
Our Journey

Our Journey & Achievements

By advancing world-leading research, developing the next generation of cybersecurity professionals, and translating knowledge and technologies into society, we contribute to a safer and more secure future.

ResearchWorld-Leading Cybersecurity Research

  • Since research began in 1981, we have continuously produced pioneering research that has helped shape the future of cybersecurity, spanning areas such as public-key cryptography, biometrics, information-theoretic cryptography, and IoT security for more than four decades.
  • Our research has been consistently accepted at top-tier international conferences, including USENIX Security, IEEE S&P, NDSS, and CRYPTO, as well as leading conferences such as RAID, ESORICS, and ASIACCS, demonstrating a strong track record among cybersecurity research institutions in Japan.
  • Addressing critical challenges facing society, we have participated in numerous major national research projects, including the Strategic Innovation Promotion Program (SIP), the Economic Security Important Technology Development Program of NEDO and JST, the NICT Beyond 5G (6G) Fund Program, and research projects commissioned by the Ministry of Internal Affairs and Communications.
    Since 2016, we have secured 14 major national research projects, with total research funding exceeding JPY 2.5 billion.
  • Our research has received more than 100 awards and honors in Japan and abroad, including the Distinguished Paper Award at the prestigious NDSS Symposium and three separate Minister of Education, Culture, Sports, Science and Technology Awards for different research achievements, as well as numerous academic paper awards.
  • We have conducted active international joint research with leading research institutions around the world, including Delft University of Technology in the Netherlands, University College London in the UK, the Information Security Center of the Helmholtz Association in Germany, the University of Lorraine in France, the University of Zaragoza in Spain, the University of California, Santa Barbara (UCSB) and Stanford University in the United States, and the University of New Brunswick in Canada.

EducationDeveloping the Next Generation of Cybersecurity Professionals through Interdisciplinary Education

  • Through interdisciplinary education integrating computer science and social sciences, we develop a diverse range of cybersecurity professionals, including researchers, engineers, practitioners, and policymakers.
  • For more than 25 years, we have promoted interdisciplinary education and research through the integration of science and the humanities, spanning fields such as AI, natural language processing, robotics, law, and technology management.
  • We have trained and supported more than 50 doctoral graduates who have gone on to make significant contributions in academia, national research institutes, and industry. Our alumni are active as faculty members at universities in Japan, the United States, and South Korea, as well as leaders in cybersecurity at national research institutes and private companies.
    Examples of leaders who earned their doctoral degrees at Yokohama National University include a Fellow and former Director of the Cyber Physical Security Research Center at AIST, the former Director of the Cybersecurity Research Institute at NICT, a former Principal Senior Researcher at AIST’s Cyber Physical Security Research Institute, an Advisor at the Institute for Monetary and Economic Studies of the Bank of Japan, and the General Manager of Global Product Security Strategy at Panasonic, among many others.
  • Our graduates and alumni have gone on to pursue successful careers at a wide range of organizations, including the following. Company names are listed as they were known at the time of employment.
    KDDI Corporation, IBM Japan, LY Corporation (LINE Yahoo), NTT DOCOMO Business (NTT DOCOMO, NTT Communications), NTT East, PwC, Deloitte Tohmatsu, KPMG, SCSK, Sky, Akamai Technologies, Accenture, Amazon Web Services Japan, Amano, Anritsu, Ericsson Japan, Casio Computer, FFRI Security, NTT DATA, PFU, SAP, IIJ, Oki Electric Industry, KEYENCE, Koei Tecmo, DENSO, Toshiba, Nomura Research Institute, Hitachi, Hitachi Solutions, Fujitsu Laboratories, Honda Motor, Mitsubishi Research Institute, Mercari, Recruit, Ricoh, Canon, Kyocera Communication Systems, National Institute of Advanced Industrial Science and Technology (AIST), National Institute of Information and Communications Technology (NICT), Sharp, Nippon Steel, Sumitomo Electric Industries, Seiko Epson, Sony, SoftBank, Chubu Nippon Electric, Toshiba Solutions, National Printing Bureau, Information-technology Promotion Agency, Japan (IPA), Toyota Motor Corporation, Trend Micro, Bank of Japan, NEC, NTT, HP Japan, Nihon Unisys, NHK, Panasonic, FANUC, LINE, Yahoo Japan, Rakuten Group, Fuji Xerox, Fujitsu, Mizuho Information & Research Institute, Mitsubishi Motors, Mitsubishi Electric, Yokohama National University, Juntendo University, The University of Electro-Communications, KAIST, the University of Alabama, Shizuoka Institute of Science and Technology, and Notre Dame Seishin University.
  • Students have also achieved outstanding results while they conduct research at our university, receiving more than 80 academic paper awards and numerous prizes in cybersecurity competitions, including CTFs.
    Recent achievements include the 2026 Information Risk Management Contest, where students received both the Minister of Education, Culture, Sports, Science and Technology Award and the Mizuho Financial Group Award; first-place finishes in the Static Analysis and DFIR + Offensive categories of the MWS Cup 2025, a competition focused on malware and cyberattack analysis; and top results in the Toyota Motor Corporation HackFesta, a competition on automotive security analysis, including first and second place in the 2024 domestic qualifiers and first and second place in the 2025 Japan competition. Students have also achieved top results in the Ministry of Internal Affairs and Communications’ nationwide CTF competition, including first place at the Tokyo venue in 2024.
    In addition, a student conducting research on a cyberattack observation system at Yokohama National University was recognized as an IPA MITOU Super Creator for work related to this research.

PracticeShaping a Safer and More Secure Future Together with Society

  • We translate research outcomes into societal value through responding to real-world cyberattacks, social implementation, and collaboration among industry, government, and academia.
  • For more than a decade, we have operated an IoT cyber threat monitoring and analysis platform, providing threat intelligence to more than 290 organizations across 50 countries and regions.
    We have also operated a denial-of-service attack monitoring and alerting system for more than a decade, providing alerts to ICT-ISAC and the Shadowserver Foundation. This technology was also used to monitor cyberattacks during the Tokyo 2020 Olympic and Paralympic Games.
  • We have participated in the Ministry of Internal Affairs and Communications’ surveys of critical IoT devices three times (2017, 2020, and 2023), identifying and reporting more than 1,000 vulnerable devices and facilities in Japan in total. These efforts have contributed to improving the security of critical systems across the country.
    We are currently developing an updated survey system incorporating AI-based risk assessment capabilities.
  • Since 2022, we have operated am I infected?, a free IoT security assessment service that has been used by more than 240,000 users, with over 400,000 assessments conducted to date.
    These efforts have been recognized with the Cybersecurity Award and the MCPC Award.
  • Through our research, when we identify vulnerable devices or systems, we register them with CVE, the internationally recognized vulnerability identifier system. To date, we have registered 33 CVE entries.
    We also provide extensive support for incident response on campus, leveraging our latest cybersecurity research. In particular, we have recently been applying AI to improve the efficiency of incident response.
  • We collaborate with more than 50 companies, including NTT, KDDI, SoftBank, NEC, Toyota, Fujitsu, Hitachi, Mitsubishi Electric, Panasonic, PwC, and Deloitte Tohmatsu, as well as national research institutes and public organizations such as NICT, AIST, JPCERT/CC, and IPA. Through these partnerships with industry, government, local authorities, and industry associations, we promote joint research, technology development, and cybersecurity policy development.
  • Our faculty members have made sustained contributions to society, industry, and cybersecurity policy through participation in more than 120 government advisory committees, including those convened by NISC/NCO, the Ministry of Internal Affairs and Communications, the Ministry of Economy, Trade and Industry, and the Ministry of Education, Culture, Sports, Science and Technology. They have also delivered more than 250 keynote speeches, invited talks, and lectures at industry events.
Contact

Contact Us

Please feel free to contact us regarding joint research, technical consultations, media inquiries, laboratory visits, and other opportunities for collaboration.

Administrative Office
〒240-8501 79-5 Tokiwadai, Hodogaya Ward, Yokohama City, Kanagawa Prefecture Phone: +81 (45) 339-4454
Facsimile: +81 (45) 339-3057
Email
ynugr-spiral-contact[at]ynu.ac.jp