What is safe to type into a prompt, and what never is.
🔴The golden rule. Never paste raw personal data: civil ID numbers, account numbers, balances, salaries, or passwords. Ever.
🎭The anonymising technique. Swap real names for placeholders. "Analyse customer Khalid Al-Sabah's payment history" becomes "Analyse Customer A's payment history."
🏷️Sensitivity labels. If your organization labels files as confidential, those labels can stop a tool extracting the data at all. Ask whether yours does.
You almost never need the real value. The shape of the problem is what the tool works on.