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IssueHunt, K.K. 2023

Tokyo, Central District

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The security level of domestic companies is inferior to that of foreign companies in terms of product security measures. We plan to develop a system to manage security measures to prevent information leaks and system failures caused by vulnerabilities in IT services provided to individuals and corporations. Specifically, we believe that we can contribute to the shortage of security personnel and improve the product security level of domestic companies by developing a system that can detect vulnerabilities in each development phase while maintaining the development structure.

IssueHunt, K.K. 's News & Column
NEW INFORMATION

IssueHunt to Host Student Cybersecurity Conference

2025/12/08

STARTUP LEAGUE

IssueHunt to Host Student Cybersecurity Conference "P3NFEST" in March 2026

IssueHunt Inc. (Headquarters: Chuo-ku, Tokyo; CEO: Kazumasa Yokomizo), operator of the bug bounty platform "IssueHunt," announced on December 8 that it will hold the 4th "P3NFEST," a cybersecurity conference for students, on Saturday, March 7, 2026.

2025/12/08

STARTUP LEAGUE

IssueHunt to Host U25-Exclusive Bug Bounty Event "P3NFEST 2026 Spring"

On December 8, IssueHunt Inc. (Headquarters: Chuo-ku, Tokyo; CEO: Kazumasa Yokomizo), operator of the bug bounty platform "IssueHunt," announced that it will host the "P3NFEST Bug Bounty 2026 Spring." This bug bounty event is exclusively for university students and individuals aged 25 and under, running from February 16 to March 31, 2026.

2025/11/27

STARTUP LEAGUE

Accounting DX Leader TOKIUM Adopts IssueHunt's ASPM Tool "Baseline" to Balance Development and Security

On November 27, IssueHunt, Inc. (Headquarters: Chuo-ku, Tokyo; CEO: Kazumasa Yokomizo), known for operating bug bounty platforms, announced that its Application Security Posture Management (ASPM) tool, "Baseline," has been adopted by TOKIUM Inc. (Headquarters: Chuo-ku, Tokyo; Representative Director: Kenichi Kurosaki).

IssueHunt, K.K.'s Main Innovation
INNOVATION

Development of a vulnerability management system for product security measures

When it comes to product security measures, the security level of domestic companies is inferior to that of overseas companies. We plan to develop a system to manage security measures in order to prevent information leaks and system failures caused by vulnerabilities in IT services provided to individuals and corporations. Specifically, we believe that by developing a system that can detect vulnerabilities that arise in each development phase while maintaining the development structure, we can contribute to alleviating the shortage of security personnel and improving the product security level of domestic companies.

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IssueHunt, K.K. Representative Introduction
REPRESENTATIVE

Representative Kazumasa Yokomizo Kazumasa Yokomizo
Founded while still in college. Since then, he has developed "Boost Note," an OSS tool used by hundreds of thousands of engineers around the world, and "IssueHunt for OSS," an OSS support service used by Alibaba and Intel, and currently provides "IssueHunt," a bug bounty and VDP platform. HCD-Net human-centered design expert.
Main Achievements July 2022: Finalist at IVS Launchpad
October 2022: Winner of the Grand Prize at G-STARTUP 5th Batch
October 2022: Participated in B Dash Camp 2022 Fall in Fukuoka Pitch Arena
November 2022: Selected for Microsoft's "Microsoft for Startups"
September 2023: Selected for Toyo Keizai's "100 Amazing Startups"
Influential People, Things, and Events Person: Kazuhiro Ogura Masayoshi Son
Motivation, Goals, and Ideal World Originally from Fukuoka, Masayoshi Son inspired him to aspire to start a business. He wants to contribute to society by developing a business based on Japan's strength of "manufacturing," and is currently working on his current business in the hope of contributing to Japan in the field of security, which is inferior to the US and Europe. In the future, he would like to see government agencies implement bug bounty programs, and he would like to work to ensure that all domestic companies have the same security level as those in the US and Europe.

IssueHunt, K.K. Basic Informaton
BASIC
INFORMATION

Company Name IssueHunt, K.K.
Representative Name Kazumasa Yokomizo
Address Kayabacho 1-chome Heiwa Building, 1-8-1 Nihonbashi Kayabacho, Chuo-ku, Tokyo
Official Site and Social Media @IssueHunt_jp | X (Twitter)
Official Website
Founding Date 2014-03-31T15:00:00.000Z
Awards October 2022: Winner of the Grand Prize in the G-STARTUP 5th Batch
November 2022: Selected by Microsoft for Startups
September 2023: Selected for Toyo Keizai's "100 Amazing Startups"

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