Thank you for your continued patronage of Nikko Style Niseko HANAZONO.
We have been informed by Temairazu, Inc., the third-party provider of the reservation management system used by our hotel, that unauthorized access to its system has been detected. As a result, the possibility that some guest information may have been viewed or obtained by an unauthorized third party cannot be ruled out. We sincerely apologize for the significant concern and inconvenience this may cause our guests.
According to Temairazu, Inc., the unauthorized access was detected on Monday, September 21, 2026. The company has informed us that it immediately took measures to prevent further impact, identified the cause of the unauthorized access, and completed the necessary countermeasures.
According to Temairazu, Inc., the details of the incident are still under investigation. At this stage, there is a possibility that some reservation information (excluding credit card information) may have been subject to unauthorized access. This may affect guests whose reservations with our hotel were completed by September 21, 2026, for stays commencing on or after September 21, 2026.
We have also confirmed cases in which some of our guests have received messages via messaging applications such as WhatsApp, as well as by email, attempting to direct them to malicious phishing websites. We have requested that Temairazu, Inc., the reservation system provider concerned, conduct an urgent investigation into these incidents.
Please note that our hotel will never contact guests directly via messaging applications regarding their reservations. We will also never use such messages to request changes or cancellations to reservations or ask guests to enter their credit card information.
If you receive a suspicious message via a messaging application such as WhatsApp or WeChat, email, or SMS in connection with your reservation, particularly one asking you to confirm or finalize your reservation, re-enter your credit card information, or make an urgent payment, please take the following precautions:
• Do not open any URLs or links contained in the message.
• Do not enter your credit card details or personal information.
• Do not reply to the message.
• Do not make any payments or transfer funds as instructed in the message.
• If you wish to confirm your reservation details, please contact the hotel directly or the official customer service channel of the booking platform through which you made your reservation.
If you have entered your credit card details or other sensitive information on a suspicious website, please contact your credit card issuer immediately.
We once again sincerely apologize for the significant concern and inconvenience this matter may cause our guests.
For inquiries regarding this incident:
Temairazu, Inc. website:
https://www.temairazu.co.jp/
For inquiries regarding reservations:
◆ Guests who booked through the hotel’s official website:
Nikko Style Niseko HANAZONO
Main Tel: +81-136-55-6110
◆ Guests who booked through an Online Travel Agency (OTA):
Please contact the relevant OTA directly.
