⚠️ Researchers discover security vulnerability in WhatsApp
｢ researchers demonstrated that it was possible to query more than 100 million phone numbers per hour through WhatsApp's infrastructure, confirming more than 3.5 billion active accounts across 245 countries. "Normally, a system shouldn't respond to such a high number of requests in such a short time — particularly when originating from a single source," ｣
https://www.univie.ac.at/en/news/detail/forscherinnen-entdecken-grosse-sicherheitsluecke-in-whatsapp
