WhatsApp is hiding phone numbers with usernames.

Suny Choudhary draws a parallel between WhatsApp's username-based privacy and AI prompt sanitization, arguing that developers should strip sensitive identifiers from inputs before sending them to models. The post provides a practical breakdown of how to implement input filtering to protect user data in AI applications.

AI Privacy Starts at Input: What Developers Can Learn from WhatsApp Usernames Suny Choudhary Suny Choudhary Suny Choudhary Follow Jun 30 AI Privacy Starts at Input: What Developers Can Learn from WhatsApp Usernames ai security cybersecurity privacy 2 reactions Add Comment 8 min read