Our specialty is security assessment know-how regarding advanced technology such as smartphone apps and IoT.

Ierae Security Inc. is a white hat hacker organization that scans security vulnerabilities, specializing in smartphone apps and web services.
As IT becomes in widespread use, risk and awareness of information leaks have risen. And the needs for these services also increase but there are not enough security engineers, so we were founded in 2011 to provide high-quality services in this area.
We want to use our expertise to help society as much as possible, and that idea gave birth to Ierae Security Inc.
Using our proprietary assessment technology we can prevent incidents before they occur, and we work to help provide safe web service use for as many users as possible.
Starting with vulnerability scanning for web apps, which are continuing to grow in demand, we also deliver vulnerability assessment services for iOS and Android apps, which have increased rapidly in popularity in recent years.
In addition to assessment services, we also continuously develop vulnerability assessment tools for large telecommunications companies. And we have plans for the development of other new services that will help a wide variety of clients.



Makoto Makita


After graduating with a degree in computer science from the engineering department at Gunma University, he formed the security assessment teams at SoftBank and CyberAgent.
Since 2010 he has taken part in CTF Challenge Japan, sponsored by METI, and he has also been a member of the Japanese team for the worldwide hacking event DEFCON CTF, where he has produced good results. In 2011 he founded Ierae Security Inc.
His security assessment track record includes more than 900 cases, and he still continues to be in charge of vulnerability assessment.

  • Technical Engineer (Network)
  • Technical Engineer (Information Security)
  • Information Security Administrator

Takahisa Kishiya

Board Member

He has worked in the network security field since the mid-2000s. He belonged to the largest EC service company in the country, where he formed the vulnerability assessment team. He also has many assessment experiences for websites and smartphone applications.
He is currently in charge of the Ierae Security Inc. Sapporo Laboratory, where he nurtures young engineers, as he himself continues to work in the assessment field.

  • Technical Engineer (Network)
  • Technical Engineer (Information Security)
  • Information Security Administrator

Akihiro Ito

Board Member

He joined Nifty Corporation in 2002, where he was in charge of corporate marketing. After that, he was a project manager for a variety of policy programs, including the Agency for Natural Resources and Energy’s public awareness operations for renewable energy, the Ministry of Internal Affairs and Communications’ Future School Promotion Project, and the METI Cloud Technology Southeast Asia Development Project.
He spearheaded the establishment of GLOCZUS, a joint venture between METI, INCJ, and Nifty. Supporting overseas expansion for small and medium-sized companies, he has acted as project manager for operations in Thailand, Indonesia, and Malaysia.
He joined Ierae Security Inc. in 2016. Since 2017 he has been a board member at the company.

Masaaki Chida

Operating Officer

Ruslan Sayfiev

Operating Officer

After arriving in Japan in 2013, he joined Symantec Inc. as a security consultant, conducting various types of vulnerability assessment and penetration testing. From 2015 to 2017, he participated in contests such as Medical×Security Hackathon and SANS NetWars as a team and has won prizes. He joined Ierae Security in 2018. He is currently working on penetration tests and launching Red Team Services. When he has time, he participates in bug bounty and research.

  • OSWP
  • OSCP
  • OSCE
  • OSEE
  • GXPN

Ryoichi Teramura

Operating Officer

Since his student days, he has been engaged in research on security with a focus on cryptology. After completing his doctorate, he joined a major consulting firm. In 2018, he led the establishment of an automotive security joint venture with one of Japan’s largest automotive parts manufacturers. He had been engaged in launching consulting services and penetration testing services for IoT security, including automotive. He joined Ierae Security in 2021.

  • Ph.D. in Engineering
  • GXPN
  • CRYPTREC member

Norikazu Yamamura

Operating Officer

Since 2001, he has been in charge of improving overseas subsidiaries’ security in the security division of Fujitsu Limited. With subsidiaries in the U.S. and the U.K. as operations bases, he conducted security audits and other activities to promote global governance. He joined the vulnerability assessment team at GREE, Inc. in 2012. While managing the team as a manager, he was actively involved in assessment work and collaboration with the development department. Aiming to create a team that can contribute to the business with high technical skills, the company gained the ability to conduct vulnerability assessments completely in-house. In addition to being in charge of vulnerability assessment, he has also been part of its internal security. He has been involved in a wide range of activities, including verification, implementation, and operation of enterprise products. He joined Ierae Security in March 2021.

Tatsuya Hayashi


After working as an engineer and a consultant, he established Lepidum Co. Ltd. in 2004, which specializes in help and consultations for research and development of information technology. He has been engaged in standardization activities for web and internet technology mainly in W3C and IETF since 2009.
He has experience as a guest researcher and a member in research institutes and a committee member in various ministries and organizations. Also, he has delivered many lectures and been in charge of cybersecurity for almost 10 years.
In recent years, he has expertise in authentication, authorization, and privacy and leads engineers and corporate communities in digital identity area as an administration officer in OpenID Foundation Japan.

Hiroshi Kawaguchi


In 2002 he joined a large security company.
After working on maintaining the infrastructure system within the company, he joined the security monitoring center.
From 2013 to 2016 he worked with the National center of Incident readiness and Strategy for Cybersecurity (NISC).
In addition to dealing with security incidents for the administrative agencies, he also worked on public awareness activities for citizens.
He joined Ierae Security Inc. in 2018 as an advisor.

  • Cabinet Office Minister’s Secretariat Computerization Advisor
  • MEXT Cybersecurity Advisor
  • Toyama Prefectural Police Headquarters Cybersecurity Countermeasure Advisor
  • NICT CYDER Promotion Committee Member
  • Hardening Project Executive Committee
  • Micro Hardening Producer
  • Information Security Operation Providers Group Japan Technical WG Leader
  • Security Camp Lecturer
  • LAC Evangelist

Company Overview


Company name

Ierae Security, Inc.


December of 2011

Capital Stock

51 million yen


Representative director and company president
Makoto Makita


Mizuho Bank Aoyama Branch

Area of business

Web app vulnerability assessment, smartphone app vulnerability assessment

Address of the main office

Millene Kanda PREX 2F, 2-7-2 Kandatsukasamachi,
Chiyoda-ku,Tokyo 101-0048

Number of employees


Principle Clients

Sammy Networks
The Pokémon Company
National Institute of Information and Communications Technology
(Listed in no particular order, titles omitted)




Address:Millene Kanda PREX 2F, 2-7-2 Kandatsukasamachi,Chiyoda-ku,Tokyo 101-0048

About 4 minute walk from Tokyo Metro Marunouchi Line Awajicho Station
About 4 minute walk from Toei Shinjuku Line Ogawamachi Station
About 4 minute walk from Tokyo Metro Chiyoda Line Shin-Ochanomizu Station
About 6 minute walk from Tokyo Metro Ginza line Kanda Station
About 7 minute walk from JR Yamanote Line Kanda Station


Address:Hoosiers Sapporo Building 3rd Floor, Kita 2 Jonishi, 2 Chome-34, Chuo-ku, Sapporo-shi, Hokkaido 060-0002


Address:2-1-18, Tomari, Naha-shi, Okinawa 900-0012


Address: 3F Minami Tenjin Building, 5-4-12 Watanabedori, Chuo-ku, Fukuoka 810-0004


Address: 203 2F Daiei Building New Bldg, 1-12-7 Shibata, Kita-ku, Osaka-shi, Osaka 530-0012