Thank you for using the CASIO WATCHES smartphone app.

A critical security issue has been discovered in PHP, a programming language that powers web services worldwide.
Because parts of our CASIO WATCHES service utilize PHP, we have temporarily suspended the affected functions/services as a precautionary measure to protect our customers’ information.

At this time, we have not confirmed any unauthorized access to, or information leakage from, CASIO WATCHES.

■ Service Suspension Period

Suspension start: Wednesday, October 21, 2026 (JST)

Note: We are working to restore service as quickly as possible.

This matter relates to technology widely used across web services worldwide and is not specific to our company.

We sincerely apologize for the inconvenience caused by this sudden service suspension.
We appreciate your understanding as we work to ensure the safe provision of our services.

Note: Official information on PHP: PHP: News Archive - 2026