WhatsApp Vulnerability Exposes Data of 3.5 Billion Users

WhatsApp Vulnerability Exposes Data of 3.5 Billion Users

First seen 2 Dec 2025, 18:33 UTC •BinanceFeeds.FeedburnerGbhackersCyberpressRss.Slashdot+24 •76% similarity •30.7

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A significant security flaw in WhatsApp's discovery system allowed researchers to access the phone numbers and personal information of approximately 3.5 billion users globally. The vulnerability, which exploited a long-standing gap in the platform's design, was reported by a team from the University of Vienna and SBA Research. Although users' messages remained encrypted, the flaw raised serious privacy concerns regarding user data exposure.

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SpearSpecter Akira Ransomware Everest ShadowRay 2.0 Coyote Maverick Sorvepotel Dell Meta Meta Platforms SBA Research Twitter University Of Vienna WhatsApp Windows XMPP Financial Data Breach