News | Is WhatsApp a security threat?

Researchers in Austria have identified a vulnerability in WhatsApp that made it possible to verify large numbers of phone numbers and collect user data on a massive scale.

Using an automated number-generation method, researchers were reportedly able to test up to 70,000 numbers per second and gather information linked to approximately 3.5 billion accounts, including phone numbers, profile photos, status messages, activity data, device types, and connected companion devices.