Top Cyber Security Startups in Japan (2025 Update)
Explore the best Cyber Security companies in Japan. Discover high-growth startups and investment opportunities in our 2025 updated list.
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Explore Top Cyber Security Startups in Japan featuring 31 Companies
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SELF Inc. | - | 会話AIでUXを変革するSELF | 西新宿 | - |
Japan
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- | Japan (HQ) | 2014 | Cyber Security, Information Technology | - |
1
Low
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3
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11.5K (-7%) | 6 years ago | Corporate Round | 2 | 300.0M | 13 | 5 hQI Zlr | |
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Runetale | - | Connectivity infrastructure for your internet security. Powered by WireGuard. | Runetale is a simple, fast alternative to traditional corporate VPNs, built on t... | - |
Japan
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- | Japan (HQ) | 2023 | B2B, Cyber Security +1 | [email protected] |
1
Low
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1
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68 | 1 year ago | Seed | 1 | 90.0M | 1550 | 9 hlA l8s | |
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i Cubed Systems | - | Enjoy the challenge. | We are a Fukuoka-based IT company providing solutions using cloud and mobile tec... | - |
Japan
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- | Japan (HQ) | 2001 | Cyber Security, Enterprise +4 | - |
1
Low
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39
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15.7K (-14%) | 6 years ago | Series Unknown | 3 | 800.0M | 353 | 5 months ago | |
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EAGLYS Inc. | - | あらゆるデータを安全に活用できる社会の実現へ |
□ Tokyo office（本社） 東京都渋谷区千駄ヶ谷5-27-3 やまとビル７F 7F Yamato build... |
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Japan
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- | Japan (HQ) | 2016 | AI, Cloud Infrastructure +4 | [email protected] |
1
Low
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42
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11.0K (-32%) | 4 years ago | Series A | 4 | 1.0B | 412 | 5 months ago | |
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Keychain | - | The Key to Accelerating Your Digital Value Chain | Keychain provides a Zero Trust software framework that lets companies quickly de... | - |
Japan
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- | Japan (HQ) + 1 | 2016 | Blockchain, Cyber Security +5 | [email protected] |
1
Low
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3
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1.0K | 6 years ago | Series A | 1 | 1.0M | 187 | 1 year ago | |
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Flatt Security Inc | - | We are a cyber security startup based in Tokyo, specialized in security assessme... | Flatt Security Inc. is a cyber security startup based in Tokyo, Japan. We provid... | - |
Japan
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- | Japan (HQ) | 2017 | Cyber Security, Developer Tools +2 | [email protected] |
1
Low
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28
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17.2K | 3 years ago | Debt Financing | 4 | 647.0M | 257 | 2 rb5 8QM | |
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Midokura | - | Midokura is a Sony Group company that delivers innovative solutions to power the... | A Sony Group subsidiary with offices in Tokyo and Barcelona. We aim to create a... | - |
Japan
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- | Japan (HQ) + 1 | 2010 | AI, Cloud Infrastructure +4 | [email protected] |
1
Low
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80
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582 (79%) | 8 years ago | Series B | 3 | 39.0M | 4681 | 5 months ago | |
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株式会社デジタルアセット... | - | 次世代のデジタルスワップを支えるプラットフォーマーとして、暗号分散技術領域での独... | 私たちはパートナー企業や自社で運営する暗号資産交換所を通じ、金、銀、プラチナに価... | - |
Japan
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- | Japan (HQ) | 2018 | Big Data, Blockchain +6 | - |
1
Low
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1
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92663 | - | Series A | - | 523.7M | 19 | 4 months ago | |
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Ridge-i (リッジアイ) | - | 先端技術の追及とビジネスインパクトの両立を目指すために、3つの強み「技術追及力」... |
【組織コンセプト】 最高峰の先端技術を活用し、ビジネスの最高地点「Ridge」を同僚・... |
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Japan
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- | Japan (HQ) | 2016 | AI, Automation +2 | [email protected] |
1
Low
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34
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9.9K | 4 years ago | Series Unknown | 2 | 1.5B | 257 | 2 years ago | |
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Cyber Security Cloud, Inc... | - | Our aim is to create a secure cyber space that people around the world can use s... | We are a Japanese firm which deals in Web Security Services. We believe in creat... | - |
Japan
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- | Japan (HQ) + 1 | 2010 | Cloud Infrastructure, Cyber Security +2 | - |
1
Low
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46
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15.6K (-16%) | 6 years ago | Series Unknown | 6 | 333.7M | 462 | 6 months ago | |
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CyberTiger Ltd. | - | Connecting entrepreneurs in Asia with global opportunities | CyberTiger is a consulting firm specialized in realizing innovative technology a... | - |
Japan
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- | Japan (HQ) | 2014 | Cyber Security, Internet +1 | [email protected] |
1
Low
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3
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405 (-60%) | 10 years ago | Seed | 1 | 100.0K | 95 | 1 year ago | |
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NEC Corporation | - | - | NEC Corporation has established itself as a leader in the integration of IT and... | - |
Japan
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- | Japan (HQ) + 3 | 1899 | Big Data, Cyber Security +2 | - |
1
Low
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17163
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1.2M (-8%) | 4 years ago | Post Ipo Equity | 1 | 560.0M | 234271 | 6 months ago | |
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GRCS | - | - | 9F MG Ichigaya Building, 1-9 Gobancho, Chiyoda-ku, Tokyo, Japan | - |
Japan
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- | Japan (HQ) | 2005 | Cloud Infrastructure, Cyber Security +3 | [email protected] |
1
Low
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68
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26.0K (-28%) | 5 years ago | Series Unknown | 4 | 624.3M | 609 | 5 months ago | |
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CollaboGate | - | Connecting every devices and the cloud with digital trust | Our mission is to simplify data infrastructure for transforming industries. We p... | - |
Japan
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- | Japan (HQ) | 2019 | Cyber Security, Developer Tools | - |
1
Low
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7
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904 | 2 years ago | Seed | 1 | Unknown | 221 | 8 months ago | |
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Humming Heads | - | Security software provider featuring end-to-end auto-encryption, detailing of us... | Since its founding in 1999 in Tokyo, Japan, Humming Heads has put a great amount... | - |
Japan
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- | Japan (HQ) | 1999 | Cyber Security, Privacy and Security | - |
1
Low
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9
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14.5K (12%) | - | - | - | - | 65401 | 2 gNc iX3 | |
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Trend Micro | - | - | We’re a global cybersecurity leader, helping to make the world safe for exchangi... | - |
Japan
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- | Japan (HQ) + 46 | 1988 | Cloud Infrastructure, Cyber Security +1 | [email protected] |
1
Low
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7559
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8.3M (1%) | - | - | - | - | 269749 | 5 months ago | |
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SECOM Co., Ltd. | - | - | Established in 1962, SECOM is recognized as Japan’s first security services prov... | - |
Japan
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- | Japan (HQ) | 1962 | Cyber Security, Information Technology +1 | - |
1
Low
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130
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470.7K (10%) | - | - | - | - | 1587 | 5 months ago | |
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IssueHunt | - | - |
IssueHunt - Bug Bounty and VDP platform in Japan. - Bug Bounty: https://www.issu... |
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Japan
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- | Japan (HQ) | 2014 | Cyber Security, Information Technology +1 | - |
1
Low
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7
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3.9K (56%) | - | - | - | - | 24 | 9 tXC MIz | |
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OneBe, Inc. | - | - | OneBe is a company that materializes the security needs of all People who utiliz... | - |
Japan
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- | Japan (HQ) + 1 | 2006 | Cyber Security, Information Technology | - |
1
Low
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14
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681 (-100%) | - | - | - | - | 28 | 2 qnM O58 | |
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Nihon Cyber Defence Co.,... | - | Cyber Future Today | Nihon Cyber Defence (NCD), headquartered in Tokyo, is a global leader in cyberse... | - |
Japan
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- | Japan (HQ) + 1 | 2017 | Cyber Security, Information Technology | - |
1
Low
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34
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1.2K (-29%) | - | - | - | - | 1286 | 5 months ago | |
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NTT Security Holdings | - | - | For over 20 years, NTT has provided proactive cyber defense and services that ma... | - |
Japan
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- | Japan (HQ) | 1988 | Cyber Security, Privacy and Security | - |
1
Low
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17
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26.4K (408%) | - | - | - | - | 709 | 7 months ago | |
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NOX Co., Ltd. | - | - | 米国シリコンバレーを中心とした海外IT製品・サービスを取り扱うIT商社です。最先端ソ... | - |
Japan
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- | Japan (HQ) | 1992 | Cyber Security, Hardware +1 | - |
1
Low
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13
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18.6K (18%) | - | - | - | - | 39 | 1 year ago | |
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TI Tokyo | - | World's No 1 Provider of Riak Support 2017-2023 | TI Tokyo provides the world's only 24/7/365 service and support function for the... | - |
Japan
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- | Japan (HQ) | 2014 | Cyber Security, Information Technology | [email protected] |
1
Low
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5
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48459 | - | - | - | - | 296 | 1 year ago | |
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ATD InnoSolutions株式会社 | - | Microsoft365を用いたセキュリティ対策、Azureを利用したクラウド開発、生成AIサービ... | Microsoft365を用いたセキュリティ対策、Azureを利用したクラウド開発、生成AIを用い... | - |
Japan
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- | Japan (HQ) | 2023 | AI, Cyber Security +1 | [email protected] |
1
Low
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2
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8649 | - | - | - | - | 7 | 11 months ago | |
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AAPAI Technologies Ltd. | - | You ask for BETTER, We'll give you the BEST | We want to live in a world where people can buy things that match their needs ra... | - |
Japan
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- | Japan (HQ) + 8 | 2019 | Computing, Cyber Security +3 | [email protected] |
1
Low
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11
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304 | - | - | - | - | 405 | 5 months ago | |
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Cyber Defense Institute,... | - | Only humans can counter human-driven threat |
Only humans can counter human-driven threat. Threats in cyberspace may vary, bu... |
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Japan
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- | Japan (HQ) | 2008 | Cyber Security | - |
1
Low
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19
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73017 | - | - | - | - | 129 | 9 5vK CFL | |
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ALAXALA Networks Corporat... | - | The Guaranteed Network - Closer to you, Further into the future. | Design, development, production, and sales of exceptionally reliable, high-perfo... | - |
Japan
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- | Japan (HQ) + 1 | 2004 | Cyber Security, Hardware +1 | - |
1
Low
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34
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81866 | - | - | - | - | 146 | 5 bnv xAd | |
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Kaspersky Japan | - | Kaspersky is the world’s largest privately held vendor of endpoint cybersecurity... | Kaspersky is the world’s largest privately held vendor of endpoint cybersecurity... | - |
Japan
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- | Japan (HQ) | 1997 | Cyber Security, Enterprise Software +1 | [email protected] |
1
Low
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20
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239.3K | - | - | - | - | 1227 | 4 months ago | |
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DataSign Inc. | - | Personal data ownership for all of us | We develop 'Information bank' infrastructure using the blockchain technology, an... | - |
Japan
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- | Japan (HQ) | 2016 | Big Data, Cyber Security +1 | [email protected] |
1
Low
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7
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68224 | - | - | - | - | 70 | 2 IsB fZ8 | |
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Tokyo Electron Device, Lt... | - | - | Tokyo Electron Device (TED) is a technical trading firm with a "trading business... | - |
Japan
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- | Japan (HQ) | 1986 | Cyber Security, Information Technology +1 | - |
1
Low
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177
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119.7K | - | - | - | - | 1088 | 5 months ago | |
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NTT Security Holdings | - | - | For over 20 years, NTT has provided proactive cyber defense and services that ma... | - |
Japan
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- | Japan (HQ) | 1988 | Cyber Security, Privacy and Security | - |
1
Low
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17
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6457 | - | - | - | - | 709 | 7 months ago |