‘Largest Data Leak in History’: WhatsApp Flaw Exposed Billions of Users

by Amanda Lee November 19, 2025

written by Amanda Lee November 19, 2025

Austrian researchers used a WhatsApp contact-lookup flaw to map 3.5 billion phone numbers, revealing how basic metadata can build a directory of accounts.

The post ‘Largest Data Leak in History’: WhatsApp Flaw Exposed Billions of Users appeared first on TechRepublic.

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