Knowing What Not to Share

Context makes AI better — but some things should never go into a chat. Today is about one easy habit: keeping sensitive information out.

It takes seconds and protects you completely. Think of it as the seatbelt of using AI.

Your chats may be stored by the provider and, depending on settings, could be reviewed to improve the service. Treat the chat box like a semi-public notebook.

Useful, yes — but not the place for secrets. Sharing the wrong thing could expose you if data were ever mishandled or breached.

Rule one: no passwords, PINs, or security codes. Ever. The AI does not need them and cannot safely use them.

If a task seems to require a password, redesign the task. There is always another way that does not involve typing a secret.

Keep full card numbers, bank account numbers, and similar data out. If you need help with a bill, describe it without the exact account number.

"My phone bill went up $20" works fine without revealing your account. Share the situation, not the sensitive digits.

Avoid pasting full national ID numbers, passport numbers, or anything used to verify your identity.

These are exactly the details identity thieves want. The AI can help with forms and questions without you handing over the actual numbers.

It is not just about you. Do not paste other people's private details — a friend's address, a client's contract with their info, medical details about a family member.

Mask names and specifics when the content is not yours to share. Respecting others' privacy matters too.

You usually do not have to remove the whole document — just blank out the sensitive bits. Replace a number with "[account number]" or a name with "[client]."

The AI works perfectly with placeholders. You keep the help without handing over the secret.

Before pasting anything, ask: "Would I be comfortable if this appeared on a sticky note left on a café table?"

If not, mask it or leave it out. That single question catches almost everything you should protect.

If you use AI for your job, check your workplace's rules. Confidential company data, customer records, and trade secrets may be off-limits.

When unsure, keep it general or ask your employer. Better a vague prompt than a leaked secret.

None of this limits how useful AI is. You can describe situations, use placeholders, and share what is safe — and still get excellent answers.

Privacy and usefulness coexist easily. You just trim the few details that should stay private.

Build the reflex: every time you paste or type, take a half-second to spot anything sensitive. Soon it is second nature.

This one habit lets you use AI freely and confidently, knowing you are not putting yourself or anyone else at risk.

Which of these should you keep out of an AI chat?

Keep passwords, full financial and ID numbers, and others' private data out of any chat. Mask sensitive bits with placeholders instead of skipping the task, and check your workplace rules for work data.

The one-question test — "would I leave this on a café table?" — catches almost everything worth protecting.