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BreachesJul 24, 2026

Vatican's Official Prayer App Leaks 700K+ Global Users' PII

Vatican's official prayer app exposes 700K+ users' PII via insecure API endpoint.

The Vatican's official prayer application leaked personally identifiable information for over 700,000 global users through an unprotected API endpoint. The exposed data included names, email addresses, geographic location, and account status—all accessible to anyone with a web browser. The vulnerability represents a significant privacy breach affecting a large user base of religious application users worldwide.

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The lesson from this incident

Full lesson

The Vatican's official prayer app exposed personally identifiable information for over 700,000 users due to an API endpoint that required no authentication, meaning anyone with a browser could freely access sensitive data. This is a classic misconfigured API vulnerability — a growing attack surface as mobile and web applications increasingly rely on APIs to serve data. The exposed data (names, emails, location, account status) creates real risk for phishing, targeted scams, and religious profiling of users across the globe. The breach underscores that even mission-driven, non-commercial organizations must apply rigorous security controls to any internet-facing service handling personal data.

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Vatican Official Prayer App (product)Vatican (vendor)