Mostly this is "ensured" through workshops and guidelines. But removing PII from a prompt is super annoying, especially when you copy-paste a lot of data back and forth.
For this use case we did build PromptSecure. A webapp that automatically removes all PII from a prompt. Fully in the browser. NO DATA IS EVER SEND TO US!
We hope that by making the barrier to entry super low, employees actually use this.
Hope you find this useful and discover a few bugs in it ;)
Monetization: This widget/in-browser tool will stay free forever! If you want to embed the technology into your company internal chat system, talk to us :D