Chief Executive Officer Makoto Makita
After graduating from the Department of Information Engineering, Faculty of Engineering at Gunma University, he was instrumental in establishing security assessment teams at both SoftBank and CyberAgent. From 2010, he actively participated in the Ministry of Economy, Trade and Industry (METI) sponsored CTF Challenge Japan and DEFCON CTF, the world's largest hacking event, as a member of a Japanese hacker team, achieving notable results. In 2011, he founded IERAE SECURITY (now GMO Cybersecurity by Ierae, Inc.). To date, he has overseen approximately 900 security assessments and continues to engage in vulnerability assessment services.
- OSCP
- JGISP
- CISSP
- Technical Engineer (Network)
- Technical Engineer (Information Security)
- Information Security Administrator
2005／ Joined SoftBank BB Corp.
2010／Joined CyberAgent Inc.
2011／Founder and CEO of the former Ierae Security Co., Ltd.
2021／Director of the Company (current position)
2021／Representative Director of the Company (current position)
2022／Director of GMO AI & Web3, Inc.
2023／CISO (Chief Information Security Officer) of GMO Internet Group, Inc.
Group Security Audit Office, Technology and Security Officer (current position)
Executive Vice President and CISO Takahisa Kishiya
Takahisa Kishiya has been at the forefront of network security since the mid-2000s. While at Japan's premier e-commerce company, he founded and headed the vulnerability assessment team, gaining extensive experience in assessing the security of websites and mobile applications. Currently, he oversees the Cybersecurity, Product Development, and Information Systems divisions.
- OffSec Web Expert (OSWE)
- AWS Certified Security – Specialty
- Technical Engineer (Network)
- Technical Engineer (Information Security)
- Information Security Administrator
2006／Joined Rakuten, Inc.
2015／Joined the former Ierae Security Co., Ltd.
2016／Director of the company
2022／Director of the Company (current position)
Executive Managing Director COO Daizo Okoshi
1991／Joined Digital Technology Co., Ltd.
1998／Netvolt Co., Ltd. established
2000／Representative Director of Backbone Software Co., Ltd. (formerly NetVolt)
2011／CEO of Quest Software Co., Ltd.
2013／CommVault Systems Co., Ltd. Area Vice President
2015／Veeam Software Japan, Ltd. Country Director Japan and Korea
2017／President and CEO of Barracuda Networks Japan, Inc.
2022／Executive Officer, COO and Head of Sales Department
2024／Senior Executive Officer, COO and Head of Sales Division
2025／Appointed Director and Head of Sales Division (current position) of the Company
Director CFO So Tamaki
1996／ Joined Daiwa Securities Co., Ltd.
1999／ Joined Mitsubishi UFJ Securities Co., Ltd.
2008／ Joined Mizuho Securities Co., Ltd.
2017／ Joined JINS Co., Ltd.
2018／ Joined Baroque Japan Limited
2020／Joined Infcurion Co., Ltd.
2024／Executive Officer, CFO, General Manager of the Management Division
2024／Senior Executive Officer, CFO and Head of Corporate Division
2025／Appointed Director and Head of Corporate Headquarters of the Company (current position)
Director CGO Hikohiro Lin
Open CSIRT Foundation Certified SIM3 Auditor（公認監査人）
2003／Joined Matsushita Electric Industrial Co., Ltd. (now Panasonic Corporation)
2022／Joined PwC Consulting LLC
2024／Senior Executive Officer, General Manager of Global Strategy Division
2025／Appointed Director and General Manager of the Global Strategy Division of the Company (current position)
Director Hiroyuki Nishiyama
2022／Director of the Company (current position)
External Director Masaki Yuda
2012／Joined Yahoo Japan Corporation
2018／Seconded to YJ Capital Co., Ltd. (currently Z Venture Capital Co., Ltd.)
2021／Joined Z Venture Capital Co., Ltd. (current position)
2024／Outside Director of the Company (current position)
External Director Yuki Kuwabara
2012／Joined Japan Research Institute, Ltd.
2018／Joined Innovation Network Corporation of Japan
2020／Outside Director of ExaWizards Inc.
2020／Joined JIC Venture Growth Investments Co., Ltd. (current position)
2020／Outside Director of the Company (current position)
2022／Outside Director of QunaSys Inc. (current position)
2023／Outside Director of Kyoto Fusioneering Co., Ltd. (current position)
2024／Outside Director of Power Diamond Systems Co., Ltd. (current position)