Casio suspends some CASIO WATCHES app features over PHP security issue

Casio has temporarily suspended parts of the CASIO WATCHES app's services since 21 October 2026 due to a critical security issue in PHP, which powers some of its web services. The company calls it a precautionary measure, has not confirmed any data breach and gave no timeline for full restoration.

• Suspension took effect on 21 October, announced on 22 October 2026
• Casio did not specify which app functions or watch models are affected
• No breach or customer data leak has been confirmed
• No date for full service restoration was provided