> A Simple WhatsApp Security Flaw Exposed 3.5 Billion Phone Numbers

[SOURCE] Wired Security [AUTHOR: Andy Greenberg] [DATE: 18/11/2025 14:00] [LANGUAGE: EN]

By plugging tens of billions of phone numbers into WhatsApp’s contact discovery tool, researchers found “the most extensive exposure of phone numbers” ever—along with profile photos and more.

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