What happened
01
The Meta AI app launched in April 2025 with a public Discover feed.
02
Reporters found medical, legal and personal questions posted publicly.
03
Mozilla and privacy researchers called for the feed to be changed.
04
Meta added a warning around 16 June 2025: prompts you post are public.
Why this is a design failure
When sharing looks like saving, people publish what they meant to keep private.
The fair alternative
Keep chats private by default, and make publishing a separate, clearly labelled step.
Do
Show exactly who will see a post before it is shared.
Don’t
Don’t place “share” where people expect “save”.
Company response
Meta said chats are private unless users choose to post them, and added a warning.