INFORMATION SECURITY POLICY

Information Security Policy

Y4.com Inc. recognizes the critical importance of protecting valuable information assets entrusted by our clients from risks of leakage, damage, or loss, and conducts company-wide activities to maintain information security under this Basic Policy.

EQA ANAB ISO/IEC 27001:2022 & JIS Q 27001:2023

Information Security Policy

Basic Philosophy

Y4.com Inc. (hereinafter referred to as "the Company"), as a business operator providing Specific Health Guidance, general long-term care prevention, severe disease prevention, Health & Productivity Management, health promotion, maternal and child support, and disaster support services utilizing health management platforms and ICT devices, recognizes the importance of protecting the valuable information assets of our clients from the risks of leakage, damage, or loss, and conducts activities to maintain information security with all employees complying with this Basic Policy.

Basic Policy

1. Compliance with Laws and Regulations

To protect information assets, we establish a security policy and conduct business in accordance with it, while complying with laws, regulations, and other norms related to information security, as well as contractual terms with our clients.

2. Information Security Objectives

To protect information assets, the Company establishes information security objectives and periodically monitors and evaluates the degree of their achievement.

3. Establishment of Information Security Management System

The Company establishes an information security management structure centered on the Representative Director and clarifies responsibilities and authorities regarding information security. Furthermore, we conduct regular education, training, and awareness activities so that all employees recognize the importance of information security and ensure the proper handling of information assets.

4. Management of Information Assets

The Company implements organizational, physical, technical, and human control measures to promote the safe and proper management and operation of information assets, and takes necessary and appropriate security measures to prevent leakage, damage, or loss of information assets.

5. Response to Information Security Incidents

The Company strives to prevent the occurrence of information security incidents. In the unlikely event that an information security incident occurs, we will respond promptly.

6. Continuous Improvement

The Company establishes a mechanism based on the international standard ISMS (Information Security Management System), executes it reliably, and continuously improves it.

Date of Establishment: January 14, 2025
Y4.com Inc.
Representative Director: Yukinao Ajima
CERTIFICATION

Third-Party Certifications

Our personal information protection and information security management systems are certified and regularly audited by accredited third-party bodies.

PrivacyMark 18820373

PrivacyMark Certification

Registration No.: 18820373
Acquired: July 16, 2021

Certified personal information protection management system based on JIS Q 15001 standards by JIPDEC.
ISO/IEC 27001:2022 & JIS Q 27001:2023

ISO/IEC 27001:2022 & JIS Q 27001:2023 (ISMS)

Registration No.: IA250175
Certified: June 11, 2025 (EQA / ANAB Accredited)

Certified under the international standard for Information Security Management Systems (ISMS).
MEASURES

Technical Security Controls

ACL

Access Control

Role-based permissions ensure access is strictly limited to required data.

MFA

Multi-Factor Auth

Additional authentication factors prevent unauthorized access and spoofing.

TLS

Encrypted Transit

All communications between devices and servers are encrypted to protect health data.

LOG

Audit Logs

Viewing and operational logs are recorded to verify proper usage and enable traceability.

KEY

Periodic Key Rotation

API keys and credentials are rotated periodically to minimize impact scope.

IP

IP Restrictions

Admin console and external integration access is restricted to whitelisted IP addresses.

PRIVACY POLICY

Privacy Policy

Our handling of personal information (items acquired, purposes of use, third-party provision, and disclosure request procedures) is set forth in our Privacy Policy.

CONTACT

Inquiries Regarding Information Security

We also respond to Security Check Sheets and technical inquiries from IT departments of municipalities, enterprises, and medical institutions.