Cyber Security Cloud, Inc. (Headquarters: Shinagawa-ku, Tokyo; Representative Director, President and CEO: Toshihiro Koike; hereinafter referred to as "the Company"), a global security manufacturer, is pleased to announce that its Cloud-based WAF "Shadankun," which it develops and provides, has achieved the No. 1 ranking (*1) in terms of shipment value for fiscal year 2024 in the Web Application Firewall (SaaS/Cloud category) in the "Current Status and Future Outlook of the External Threat Countermeasure Solution Market Fiscal Year 2025" announced by Deloitte Tohmatsu MIC Research Institute Ltd., marking the third consecutive year that it has achieved the No. 1 sales share.

In October 2025, our company also achieved the No. 1 market share in the domestic Cloud-based WAF market for the third consecutive year (*2), as reported in Fuji Chimera Research Institute, Inc.'s "2025 Network Security Business Survey Overview: Market Edition."

<Comment from Toshihiro Koike Representative Director, President and CEO Cyber Security Cloud, Inc. >

As the damage caused by cyberattacks continues to worsen throughout society, we are deeply honored to have been chosen by so many customers for the third consecutive year, and we feel a renewed sense of responsibility as a security provider. Based on our management philosophy of "creating a safe and secure cyberspace that people all over the world can use with peace of mind," we will continue to contribute to solving social issues by providing innovative security services.

■ About Cloud-based WAF "Shadankun"

Cloud-based WAF "Shadankun" is a cloud-based web security service that detects and blocks external cyberattacks that could cause information leaks or service disruptions, protecting web servers and websites. Based on the analysis of trillions of records of big data, its unique high-precision detection rules prevent a wide variety of cyberattacks in real time. Furthermore, its security engineers quickly update defense signatures to address the latest vulnerabilities, and in the unlikely event of a false positive, technical support provides flexible assistance to support safe and stable site operation. It has achieved the No. 1 ranking in Japan in terms of the number of companies and sites using it (*1), and is widely used by companies of all sizes.

• Shadankun service website: https://www.shadan-kun.com/

*1: Source: Deloitte Tohmatsu MIC Research Institute, "Current Status and Future Outlook of the External Threat Countermeasure Solutions Market, FY2025"

Announced on March 31, 2026:https://mic-r.co.jp/mr/

*2: Source: Fuji Chimera Research Institute, "2023, 2024, 2025 Network Security Business Survey Overview Market Edition" <WAF, Cloud, Vendor Share, FY2022, FY2023, FY2024>

Cyber Security Cloud, Inc. (https://www.cscloud.co.jp)
Address: 13th Floor, JR Tokyu Meguro Building, 3-1-1 Kami-Osaki, Shinagawa-ku, Tokyo 141-0021, Japan
Representative: Toshihiro Koike Representative Director, President and CEO
Established: August 2010
With the mission of "creating a safe and secure cyberspace for people all over the world," we are a Japanese security manufacturer that provides web application security services utilizing world-leading cyber threat intelligence, as well as vulnerability information collection and management tools and fully managed security services for cloud environments. As one of the global companies in cybersecurity, we will contribute to solving social issues related to cybersecurity and providing added value to society.