Dear Guests,

Thank you very much for staying with PIECE HOSTEL SANJO.

We have been notified by AZOO Co., Ltd., the provider of the hotel management system "WASIMIL" used by our property, that unauthorized access by a third party to "WASIMIL" was detected. As a result, there is a possibility that personal information belonging to guests who made reservations at properties using "WASIMIL" may have been leaked.

We sincerely apologize for the inconvenience and concern this situation may cause to our guests and related parties who trust and use our services.

Below is an overview of the current situation and important requests for our guests.

1. Overview and Chronology

October 17, 2026: A property using "WASIMIL" inquired with AZOO Co., Ltd. regarding potential data leakage.

October 19, 2026: An investigation by AZOO Co., Ltd. confirmed unauthorized third-party access and leakage of certain guest personal information from "WASIMIL".

October 20, 2026: AZOO Co., Ltd. made an official announcement regarding the data leakage. Our internal investigation revealed that suspicious messages containing reservation details had been sent to some guests who booked our hostel.

2. Information That May Have Been Leaked

The following information registered in the system for guests who made reservations with our hostel on or before October 19, 2026:

• Name, gender, age, date of birth, nationality
• Email address, phone number, address, emergency contact
• Reservation number, dates of stay, room type, number of guests, accompanying guests, total amount, etc.
• Passport number, information entered during online check-in

Please note that credit card information is not stored in the "WASIMIL" system, so credit card details are NOT included in the potential leakage.

3. Actions Taken

AZOO Co., Ltd. has already implemented the following measures:

• Identified and fixed the cause of the system vulnerability
• Revoked the compromised access credentials
• Strengthened system monitoring
• Reported the incident to the Personal Information Protection Commission
Notice from AZOO Co., Ltd.

4. Important Request to Our Guests

There is a possibility that suspicious emails or messages requesting payment or credit card details may be sent, pretending to confirm your reservation details from our hostel.

Our hostel will never ask for your credit card details or request payments via email or direct messages.

If you receive a suspicious communication, please do not reply or enter your credit card or personal information. Instead, contact our hostel or the official inquiry desk of the booking site you used directly.

In the event that you have inadvertently entered your credit card information on a suspicious website, please contact your credit card company immediately.

5. Contact Information

If you have any questions or concerns regarding this matter, please contact us below:

PIECE Inc. Headquarters
Phone: +81-75-644-5878
Hours: Monday – Friday, 9:00 AM – 6:00 PM (JST)

We deeply apologize again for the inconvenience and worry this issue may cause to our guests.

Sincerely,