University Of Vienna is a organization tracked across 2 threat clusters and 6 intelligence report mentions on ThreatCluster. First observed November 18, 2025; most recent activity November 22, 2025.
A security flaw in WhatsApp allowed researchers to extract phone numbers of 3.5 billion users. The exploit involved systematically checking numbers through the app's discovery feature, revealing profile photos for 57%…
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…