Telegram co-founder Pavel Durov has exposed a critical privacy flaw in mobile notification systems, revealing that supposedly deleted messages can linger in device logs. The discovery highlights a gap in end-to-end encryption protections, as notification histories on iPhones and other devices may retain message metadata even after content is erased from apps.

Durov, a longtime advocate for decentralized communication, argues this vulnerability undermines user trust in mainstream platforms. His warnings come as privacy-focused messaging tools gain traction among crypto-native users seeking alternatives to surveillance-prone systems.

The issue transcends individual settings—a user's privacy now depends on their contacts' notification configurations. This interdependence creates systemic risks for sensitive communications, particularly in jurisdictions with aggressive data retention policies.