HENNGE K.K. (Headquarters: Shibuya-ku, Tokyo; Representative Director and President: Kazuhiro Ogura) is pleased to announce that its enterprise cloud security service, “HENNGE One”—which reduces security risks when using SaaS and fosters technology adoption—now supports Single Sign-On (SSO) integration with “Privaco,” a password manager provided by Sunnies Inc. (Headquarters: Chiyoda-ku, Tokyo; Representative Director: Nozomi Nakazawa).
With the widespread adoption of SaaS, managing accounts and passwords used for business operations has become increasingly complex, making security assurance and operational efficiency significant challenges for enterprises. Privaco is a password and access management service designed to address these issues. In addition to robust password generation, it provides group management by department or team, folder management, and secure external password-sharing features. Furthermore, its security audit function visualizes access status, supporting the enhancement of organizational governance.
Through the integration of HENNGE One and Privaco, HENNGE One users can now sign on seamlessly to Privaco, freeing them from the burden of managing multiple IDs and passwords. Furthermore, access control mechanisms powered by multi-factor authentication—including IP restrictions and device certificates—allow organizations to utilize Privaco with confidence while mitigating the risk of unauthorized access.
HENNGE will continue to expand the range of SaaS solutions integrated with HENNGE One to support corporate IT utilization and digital transformation.
About Privaco
“Privaco” is a password management and access management service for individuals and corporations.
For individual users, it provides robust authentication using Japan’s Individual Number Card, virtual email address generation, and digital asset inheritance capabilities.
For corporate clients, it delivers password management and access management infrastructure.
Moving forward, Privaco will strengthen governance features tailored for the AI era, including permission controls for both human personnel and AI agents.
URL: https://privaco.jp/
About HENNGE One
HENNGE One is a cloud security service with the largest market share in Japan* that helps businesses boost productivity. While leveraging new technologies like SaaS is vital for productivity gains, businesses face challenges such as implementing zero-trust security.
To address these challenges, HENNGE One offers three editions: the Identity Edition, which centralizes and protects multiple system IDs for secure and efficient work; the DLP Edition, which prevents accidental leaks of scattered organizational information; and the Cybersecurity Edition, which safeguards companies from cyber-attacks through a comprehensive approach spanning technology, people, and processes.
It achieves zero-trust security through a holistic security service, which reduces the burden of implementation and operation, thereby fulfilling the liberation of technology.
URL: https://hennge.com/global/service/one/
About Sunnies Inc.
Sunnies Inc. is an enterprise guided by its mission to “Bring Peace to the Digital Society.”
The company develops and provides “Privaco,” a password management and access management service for individuals and corporations.
Company Name: Sunnies Inc.
Location: 8F SF Uchikanda Bldg., 1-9-5 Uchikanda, Chiyoda-ku, Tokyo
Representative: Nozomi Nakazawa, Representative Director
URL: https://sunnies.co.jp/
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
Person in charge: Ichishima, Yano