HENNGE K.K. (Headquarters: Shibuya-ku, Tokyo; Representative Director and CEO: Kazuhiro Ogura; hereinafter “HENNGE”) is pleased to announce that it has invested in Zeami Cyber Security Co., Ltd. (Headquarters: Chiyoda-ku, Tokyo; CEO: Kakeru Oi; hereinafter “ZeamiCyberSecurity”), a developer of services that detect threats in internal IT environments.
ZeamiCyberSecurity is a developer of a web-browser-based threat detection service. The service does not require the installation of specialized software; instead, it analyzes collected information and various publicly available threat intelligence using a proprietary AI algorithm to identify problems and suggest countermeasures. The service is currently under development and is scheduled for full-scale launch in autumn of 2026.
HENNGE’s investment strategy has historically focused on fostering growth in B2B SaaS partners with strong synergistic potential. The latest investment is driven by the expectation that the partnership will generate shared value and synergy across both companies’ service portfolios, specifically in combating the rise of sophisticated cyber threats. Financial terms, including the investment amount and ownership stake, remain undisclosed.
Comment from Kakeru Oi, CEO of Zeami Cyber Security Co., Ltd.
While the threat of cyber attacks grows more severe each year, there is a critical shortage of security personnel needed to defend against them. We sought to solve this challenge through the concept of “Security Intelligence,” a fusion of AI, intelligence, and security, and have been developing Zeami Intelligence. We are truly delighted to receive this investment from HENNGE, a company with a proven track record in the Japanese SaaS market. With this investment providing strong momentum, we will devote all our efforts to delivering secure internal environments to a greater number of companies.
Comment from Kazuhiro Ogura, Representative Director and CEO of HENNGE K.K.
We are pleased to announce our investment in ZeamiCyberSecurity. Their technology is characterized by its ability to perform advanced threat detection through a web browser and its easy deployability within companies and across supply chains. This aligns perfectly with our management philosophy of “Liberation of technology to change the world.” By leveraging the knowledge and customer base we have cultivated through HENNGE One, we aim to fully support their business growth and maximize the value provided to our respective customers.
About Zeami Cyber Security Co., Ltd.
Zeami Cyber Security is a security intelligence firm dedicated to the mission of securing internal environments for organizations of all sizes. The company offers “Zeami Intelligence,” an AI-powered platform designed to aggregate and analyze security data, thereby enhancing corporate defense and operational efficiency. A distinguishing feature of its technology is its pure browser-based architecture, which eliminates the need for agents or specialized hardware. The product enables both the External Attack Surface Management (EASM) and the visualization of Internal Attack Surface Management (iASM), which is often challenging for traditional solutions. In addition to its current Third-Party Risk Management (TPRM) functionality for assessing partner and contractor risks, the company plans to introduce KEV integration and Adversarial Exposure Validation (AEV) features, with the ultimate objective of establishing a comprehensive framework for Continuous Threat Exposure Management (CTEM).
Company name: Zeami Cyber Security Co., Ltd.
Address: 1E THE HUB Kanda EAST, 1-3-1 Iwamoto-cho, Chiyoda-ku, Tokyo
Representative: Kakeru Oi (CEO)
Business: Development and provision of Zeami Intelligence, cybersecurity SaaS
Establishment: March 2024
Capital: 48.6 million JPY
Number of employees: 10
URL: https://zeami-cs.com/
About HENNGE K.K.
HENNGE K.K. is a SaaS company guided by the management philosophy of “liberation of technology to change the world,” dedicated to bridging the gap between advanced technologies and practical application. It develops and sells distinctive services: a cloud security service with the largest market share in Japan*, HENNGE One, which offers comprehensive security, including single sign-on (SSO), access management, email security, and secure file sharing, alongside device management and protection based on zero trust principles; a cloud email distribution service, Customers Mail Cloud. Established in November 1996, HENNGE was listed on the Tokyo Stock Exchange (TSE) Mothers (now Growth) in October 2019.
The company name “HENNGE” is a portmanteau of the Japanese word for transformation, ‘HENNKA,’ and ‘CHALLENGE,’ signifying its commitment to embracing every change as an opportunity.
Company name: HENNGE K.K. (securities code: 4475)
Address: Daiwa Shibuya Square, 16-28 Nampeidaicho, Shibuya-ku, Tokyo
Representative: Kazuhiro Ogura (Representative Director, President and CEO)
URL: https://hennge.com/
*Ranked No. 1 in the IDaaS Market (Sales and Share by Vendor) for FY2025 (forecast), based on the ITR Market View: Identity and Access Management/Personal Authentication Cybersecurity Market 2026 by ITR.
– Press Contact
HENNGE K.K.
Corporate Communication Division
Email: hennge-pr@hennge.com
TEL: 03-6415-3660
Person in charge: Ichishima, Yano
The names of companies, products, and services mentioned in this press release are trademarks or registered trademarks of HENNGE K.K. or other related organizations.