A popular iOS application, My Book List – Library Manager, designed to help readers organize their literary collections, has inadvertently exposed the personal data of over 42,000 users due to a misconfigured Firebase database. The breach was uncovered by cybersecurity researchers at Cybernews, who found that sensitive user information was publicly accessible without authentication.
A significant data breach has impacted the popular iOS application, My Book List – Library Manager, exposing the personal information of over 42,000 users due to a misconfiguration in Firebase, the app’s backend service.

The breach has raised serious concerns about data security and user privacy, as sensitive information such as names, email addresses, and reading histories were left vulnerable.
Security experts emphasize the importance of proper configuration and regular audits of backend services to prevent such incidents.