Security × AI × Digital Identity

Connecting and
Protecting the World.

Leveraging deep expertise in Security, AI, and Digital Identity, we bridge international standardization and real-world implementation to build a trusted digital society.

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3
Business Domains
5+
Expert Team
10+
Projects Delivered
Vision & Purpose
Lowering the barriers for individuals
and organizations to move freely across borders
From fragmented digital specifications to global interoperability.
We redefine cross-border "trust" through the dual engines of technology and governance.
Message
Message from the CEO
We need a team of experts who participate in standardization discussions firsthand while accelerating real-world implementation from the private sector

Throughout my career at major consulting firms, system integrators, and government agencies, I have been deeply involved in the standardization and implementation of security and digital identity.

What I have felt most strongly through these experiences is the persistent gap between standardization discussions and real-world deployment. Even when international standards are established, numerous barriers prevent them from being reflected in actual services.

Concusto was founded with the mission of bringing together experts well-versed in international standardization trends — including NIST, eIDAS, FIDO, OpenID Connect/OAuth, and ISO — and channeling that expertise to benefit the private sector and society. We address complex, cross-cutting challenges across three domains: Security, AI, and Digital Identity.

Ryutaro Akiyama President & CEO
Challenges
Three Structural Challenges
Facing Organizations
Security, AI governance, and digital identity — in a rapidly evolving landscape, organizations need specialized expertise to respond effectively.
01

Escalating Cyber Threats

Attack methods such as ransomware and supply chain attacks are growing more sophisticated. Organizations urgently need to strengthen their security posture, starting with security-by-design principles in service development.

02

Immature AI Governance

As generative AI rapidly proliferates, the majority of organizations have yet to establish adequate risk management, ethical guidelines, and usage policies. Designing security for AI systems is a pressing challenge.

03

Growing Complexity of Digital Identity

As international standardization advances across NIST, eIDAS, FIDO, OpenID Connect/OAuth, and ISO frameworks, implementing these standards within Japan's unique context presents significant challenges. Experts capable of designing trust architectures remain extremely scarce.

Services
Three Business Domains
By working across three specialized domains, we provide unified solutions to complex challenges that cannot be addressed by a single discipline alone.
01 ——

Security

Security Consulting

We comprehensively strengthen organizational security posture and support the creation of cyber-resilient organizations.

  • Security-by-Design Advisory
  • Risk Assessment & ISMS Certification Support
  • Security Architecture Design
  • CSIRT Development & Incident Response
  • Security Awareness & Training Programs
  • Threat Analysis & Mitigation Roadmaps
02 ——

AI Consulting

AI Strategy & Governance

We support the safe and effective adoption of AI technologies — from strategy development through implementation and governance frameworks.

  • AI Strategy & Roadmap Design
  • Generative AI Adoption & Workflow Integration
  • AI Governance & Risk Management
  • AI Ethics & Compliance
  • AI Security Design Advisory
  • AI Agent Authorization Design
03 ——

Digital Identity

Identity & Trust Services

Our team of Japan's leading digital identity experts provides end-to-end support — from identity platform strategy to international standards compliance.

  • Digital Identity Strategy & Consulting
  • Identity Verification Design
  • DIW & Data Space Concept Development
  • Standards Compliance (NIST, eIDAS, FIDO, OIDC/OAuth, ISO)
  • Privacy Impact Assessment (PIA)
  • eKYC & Trust Level Design
Why Concusto
Why Choose Concusto

Japan's Leading Digital Identity Expertise

Multiple executives specialize in digital identity. Our team's depth of expertise in international standardization — spanning NIST, eIDAS, FIDO, OpenID Connect/OAuth, and ISO — is unparalleled in Japan.

AI × Security Fusion

Our team includes experts with industry speaking engagements and published works in AI security. We address AI-era security challenges from both technical and business perspectives.

Superior Cost-Effectiveness

As an independent firm with no vendor lock-in, we deliver world-class expertise at competitive rates — maintaining quality while optimizing costs.

Global Perspective & European Standards

We are well-versed in European standards including eIDAS 2.0, DIW, and NIS2 Directive. With native-level English speakers on our team, we support Japanese enterprises in achieving global standards compliance.

Team
Expert Team
Our team brings together specialists from top consulting firms, system integrators, telecommunications companies, and government agencies — all with deep knowledge of international standardization.
CEO & Founder

Ryutaro Akiyama

President & CEO

Specializes in digital identity (authentication platforms, DIW, data spaces), security consulting, and project management. Career spanning Hewlett-Packard Japan, Nomura Research Institute / NRI SecureTechnologies, and government service.

COO & Founder
Digital Identity, Privacy, International Standardization
CSO & Founder
Digital Identity, International Standardization (ISO/IEC, FIDO Alliance), Zero Trust
CCO & Founder
Security Consulting, Digital Identity, Service Risk Assessment
ADV & Founder
AI Security & Machine Learning, AI Risk & Governance, Published Author & Industry Speaker
* In addition to the above executives, our extended team includes contracted specialists in CSIRT, SOC, AI, Data Science, and Privacy.
Company
Company Overview
Company Name
Concusto Co., Ltd.
Japanese Name
株式会社Concusto(コンクスト)
Founded
September 2025
Representative
Ryutaro Akiyama
Location
Mitsuhashi Bldg. 3F, 1-3-3 Kita-Aoyama, Minato-ku, Tokyo 107-0061, Japan
Capital
¥1,000,000
Business
Security Consulting / AI Consulting / Digital Identity Services
Corporate Number
010401193314
Invoice Registration
T4010401193314
Contact
Let's Start
a Conversation
For inquiries about Security, AI, or Digital Identity challenges, please feel free to reach out.
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