Notice of Completed Production Update for PHP Vulnerability

Thank you for using Kozutumi.

This is the Kozutumi Support Team at Heartbeats Inc.

We are writing to inform you that the production environment update and system verification regarding the previously announced PHP vulnerability have been successfully completed.

Please find the details of this update below:

1. Completion Date & Time

Thursday, October 22, 2026, at 15:37 (JST)

2. Details of Work

Applied security updates to the production environment to address the PHP vulnerability, followed by comprehensive operational checks.

3. Impact on Service & Customer Action

• Service Interruption: None. (The service remained available without downtime.)(Note: If brief interruptions or planned maintenance occurred, please adjust accordingly.)
• Required Customer Action: None. No configuration changes or actions are required on your part.
• Current Status: All services and features are fully operational and can be used safely and securely as usual.

We sincerely apologize for any concern or inconvenience this may have caused. We remain deeply committed to rigorous security measures and system reliability to ensure you can continue using our services with complete confidence.

If you have any questions or require further assistance regarding this matter, please contact our support team.

Thank you for your continued support of Kozutumi.