[Award] Real-life Account of Fighting Ransomware, 'Cyber Attack: The Moment the CEO Decides,' Wins Top Prize at 'Cybersecurity Awards 2026'

Kantsu Co., Ltd. (Headquarters: Amagasaki, Hyogo; President: Hisahiro Tatsushiro), a company specializing in logistics and IT automation, announced that its book, 'Cyber Attack: The Moment the CEO Decides' (authored by Hisahiro Tatsushiro), won the Top Prize in the Book Category at the 'Cybersecurity Awards 2026' ceremony held on March 16, 2026.

This award is organized by the Digital Policy Forum (Representative Director: Yasuhiko Taniwaki) and supported by the Ministry of Internal Affairs and Communications, the Ministry of Economy, Trade and Industry, and the National Police Agency, recognizing works that contribute to improving cybersecurity literacy in Japan.

■ Background of the Award: Why this record of 'decisions' is needed now
In September 2024, Kantsu, a company promoting logistics DX, was hit by a massive ransomware attack. Amidst the crisis where all systems were down and shipping operations halted, how did CEO Hisahiro Tatsushiro make decisions for 'business continuity' and 'customer protection'?

This book records the raw behind-the-scenes reality without holding back. As cyber incidents continue to rise, the selection committee highly evaluated the book for providing practical insights into 'what criteria a manager should use at that moment,' rather than just technical countermeasures.

■ About the 'Cybersecurity Awards'
This is a system that recognizes excellent content (books, web, fiction, projects) that helps deepen understanding of cybersecurity, privacy, and trust, supported by government agencies.

■ The Award Ceremony
At the ceremony held in Marunouchi, Tokyo, on March 16, the author was absent due to business, so Toshimoto Tatsushiro, the company's Cyber Governance Executive Advisor, accepted the award on his behalf.

[Comment from Author: Hisahiro Tatsushiro (Read by proxy)]
'Our company suffered from a ransomware attack in September 2024. At that time, I didn't know who to ask or what to do, and even searching online didn't provide accurate information. We had to grope our way through the problems in front of us. I published this book hoping that sharing these raw experiences would help others. Even though cyberattacks are in the news, many people still think, "It has nothing to do with me." I hope this award serves as a trigger for CEOs to think of this as their own issue.'

■ About the Award-Winning Work
This book is a detailed record of how CEO Hisahiro Tatsushiro thought, what he chose to discard, and what he decided to protect during the chaos of the massive cyberattack in September 2024.

■ Reader Feedback
Since its release, it has gained significant attention, especially in business and information security sectors, ranking high on Amazon.
- 'A book that conveys the "body temperature" of the field, which cannot be learned from technical books.'
- 'The tension is like a disaster movie, followed by calm post-analysis.'
- 'It hits the essence of decision-making under extreme conditions.'

■ Book Information
- Title: 'Cyber Attack: The Moment the CEO Decides'
- Author: Hisahiro Tatsushiro (President, Kantsu Co., Ltd.)
- Release Date: June 20, 2025
- Publisher: Kantsu Cyber Attack Countermeasures Office
- Price: 2,200 yen (tax included)

■ About Kantsu Co., Ltd.
Kantsu is a logistics company with 20 locations across Kansai and Kanto, handling over 15 million shipments annually. It provides outsourcing for B2B/B2C logistics and sells warehouse management systems. Based on its 2024 experience, it now supports customer growth with stronger logistics infrastructure and organizational capabilities.