# WhatsApp is hiding phone numbers with usernames.

> Source: <https://dev.to/sunychoudhary/whatsapp-is-hiding-phone-numbers-with-usernames-that-same-privacy-idea-applies-to-ai-prompts-3gi3>
> Published: 2026-06-30 11:10:13+00:00

AI Privacy Starts at Input: What Developers Can Learn from WhatsApp Usernames
Suny Choudhary
Suny Choudhary
Suny Choudhary
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Jun 30
AI Privacy Starts at Input: What Developers Can Learn from WhatsApp Usernames
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ai
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security
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cybersecurity
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privacy
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