Cybersecurity
Sarah Chen
How WhatsApp & Signal Can Track Your Phone (2025 PoC)
A disturbing open-source proof-of-concept demonstrates how 'Careless Whisper' exploits silent delivery receipts in WhatsApp and Signal to track a phone's activity state—screen on/off, offline status—without any notification to the user. This article breaks down how it works, why it matters, and what you can do about it.
11 min
98
