A Simple WhatsApp Security Flaw Exposed 3.5 Billion Phone Numbers

WIREDTuesday, November 18, 2025 at 2:00:00 PM
NegativeTechnology
A Simple WhatsApp Security Flaw Exposed 3.5 Billion Phone Numbers
  • Researchers identified a major security flaw in WhatsApp that exposed 3.5 billion phone numbers, marking a significant breach of user privacy. This vulnerability was discovered using the app's contact discovery tool, which inadvertently allowed access to extensive personal data, including profile photos.
  • The exposure of such a vast number of phone numbers poses a serious threat to user privacy and trust in WhatsApp, a platform widely used for personal and business communications. This incident highlights the need for enhanced security protocols to protect user data.
  • This incident occurs against a backdrop of ongoing debates about digital privacy and security, particularly as over 500 cryptography experts criticize proposals to scan WhatsApp chats, arguing that such measures could be invasive and ineffective. The juxtaposition of these issues underscores the challenges facing WhatsApp in maintaining user trust while navigating regulatory pressures.
— via World Pulse Now AI Editorial System

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