Cybersecurity Conferences in Japan

Discover Security Events in Japan

Japan is quickly becoming a leader in the field of cybersecurity. Over the past few decades, the nation has implemented several processes to strengthen its focus on IT security and protect its citizens. Japan's initiatives involve educating the public on cyber risks, enforcing anti-cybercrime laws, and investing in cyber defense equipment and resources.

In terms of conferences and events, Japan is home to several important cybersecurity events and conferences. These include the “Japan Computer Security Conference”, which is held annually in Tokyo and is the largest IT security event in the country. Other conferences include the Japan Security Network Symposium, the IECS International Conference on Information Technology and Security, and the Japan Information Security & Lightweight Cryptography Conference.

Additionally, Japan hosts several national and international cyber competitions, such as the National Information Security Practice Championship and the Japan Network Security Contest. These events are designed to motivate and reward innovative ideas in the field of cybersecurity, often showcasing advanced technologies developed by experts from around the world working to improve cyber safety.

The country also has a long-standing commitment to international collaboration, with the Japan Cyber Security Initiative (JCSI) a cooperative effort between the government and industry to strengthen ties between organizations across the globe. The JCSI is supported by the National Institute of Information and Communications Technology (NICT) and provides a platform to share cybersecurity-related information and initiatives to make cyberspace more secure.

All Upcoming Cybersecurity Events

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8th December 2025 | Open Source Summit Japan 2025

The Open Source Summit Japan 2025 is set to be a premier gathering for developers, technology leaders, and open-source enthusiasts in Japan. Taking place in the heart of Japan's tech landscape, the summit will focus on the latest trends, innovations, and developments in the open-source community. Attendees will have the chance to connect with industry professionals, share knowledge, and explore emerging technologies that are shaping the future of software development. As open-source projects continue to drive the digital transformation of industries, the event will offer valuable insights for those eager to contribute to and learn from global initiatives.

Throughout the summit, participants will experience a variety of sessions, including technical talks, panel discussions, and hands-on workshops. These sessions will cover a range of topics from cloud computing and security to DevOps and automation. Whether you are a beginner or an experienced developer, Open Source Summit Japan 2025 offers something for everyone. With expert speakers from leading companies and open-source foundations, this event will be an excellent opportunity for networking, professional growth, and gaining the latest knowledge to stay ahead in the rapidly evolving tech landscape.

Physical • Paid • Part of Linux Foundation

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8th December 2025 | AI_dev: Open Source GenAI & ML Summit Japan 2025

The AI_dev: Open Source GenAI & ML Summit 2025 is a premier event bringing together leading experts, developers, and researchers in the fields of Artificial Intelligence (AI), Machine Learning (ML), and open-source technologies. This highly anticipated summit offers a platform for sharing knowledge and exploring cutting-edge advancements in generative AI and machine learning. Attendees will gain insights into the latest trends, best practices, and open-source tools that are shaping the future of AI technology.

Throughout the summit, thought leaders and innovators will discuss key topics ranging from the ethical implications of AI to the evolving landscape of machine learning frameworks and algorithms. Attendees can expect in-depth sessions, interactive workshops, and networking opportunities with like-minded professionals. The event also provides a unique space for collaboration, where developers and researchers can connect and explore the latest open-source contributions to GenAI and ML. With an emphasis on community-driven progress, AI_dev 2025 is the go-to event for anyone looking to stay ahead in the fast-moving world of AI and open-source development.

Physical • Paid • Part of Linux Foundation

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28th February 2026 | SECCON 14 Open Conference

SECCON is the largest CTF competition in Japan. We hold an in-person event called "Dennoh Kaigi" (電脳会議) alongside with SECCON CTF Final competition every year. Many workshops, presentations, and mini CTFs are gathered in Dennoh Kaigi. "Open Conference" is a presentations track of Dennoh Kaigi.

At last year's SECCON Open Conference 13, various presentations were made, including on attack methods against browser extensions, the development of attack detection technology for connected cars using machine learning, and experiences taking on OSINT CTF.

We are inviting proposals for presentations via a Call for Presentations. We're looking for presentations about technological research or tool around Cyber Security. We are also looking for any difficulty proposals and it is not needed that you have previous speaker experience. :)

[ Event Information ]

  • Date : 28th Feburary 2026 and 1st March 2026
  • Venue : HULIC ASAKUSABASHI bld., 1-22-16 Asakusabashi, Taito-ku, Tokyo
  • After-party : 1st March 2026 at HULIC HALL & CONFERENCE

[ Application Period ]

  • Application due date : 16th January 2026, 23:59 JST.
  • Notification : 26th January 2026

Submissions before the following dates will receive the result and comments earlier than the final due. You are welcomed to refine and re-submit your proposal while the CFP opened.

  • 1st period : 17th October 2025, 23:59 JST. ( Notification : 27th October 2025 )
  • 2nd period : 21th November 2025, 23:59 JST. ( Notification : 1st December 2025 )

[ Requirement ]

  • It can be anything related to information security. Presentations accepted by other conferences are welcome.
  • We accept proposals in English or Japanese.
  • Presentation time is 20 minutes or 50 minutes. Please choose a time when submitting.
  • We accept presentations about new tools, but we don't accept it if it is related to sales approach.
  • Must be posted by the original author.
  • We urge you to submit your proposal early before the CFP closes since we will close it prior to the final due date if enough quality proposals are received to fill the slots.
  • This conference is operated in accordance with SECCON 14 Code of Conduct. https://www.seccon.jp/14/seccon/code-of-conduct.htm

If you have any questions, please feel free ask to cfp14@seccon.jp !

Physical • Free • Part of Seccon

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That's all we have for now.