Names, phone numbers, email addresses, ID numbers, account and card numbers, addresses and order numbers. Use Swap and Return, free at utilforge.org/tools/swap-and-return, then put the details back into the reply.
Passwords, full card numbers, medical details and staff records, even with the names swapped.
The customer gets what you send, so the reply is yours, not the AI’s. Check every name, date and amount.
Ask before you paste.