What to Check Before Sharing Data With AI

Woman with glasses using a laptop at a kitchen counter.

Practise deciding what a task needs before sharing information with AI. Use the fictional event below to separate useful planning details from private records.

For an account you already use, follow the separate privacy review checklist.

GUIDED PRACTICE · BEGINNER

Decide what to leave out before you paste

You will finish with: A smaller prompt—your instructions to AI—containing only the details needed for the task.

Time
10 minutes
Device
Phone, tablet or computer
AI tool or plan
No account needed for the on-page example

Before you start: No earlier lesson or private document is required. Use the fictional neighborhood-event details.

Cost and access: the on-page example and checks are free. No upload or paid feature is required. Trying the prompt in another AI chat is optional; that service’s access limits and prices apply.

Practice updated October 12, 2026. Example answers are illustrative. Work at your own pace.

Help with copying and pasting · All practice lessons

Get this lesson’s one-page practice sheet (PDF)

What happened in our recorded trial

The first answer kept the event at two hours, indoors, for 12 adults, but added a dollar sign to the blank budget. The published shortening follow-up removed that assumption and kept all four requested fields blank. Planning suggestions were suggestions, not confirmed event facts. No private guest records were supplied or requested for the chat.

Check the blanks as well as the wording. A blank budget should not silently choose a currency. Suggested planning tasks do not confirm a date, venue, spending amount or helper assignment. Keep actual guest records out of this practice chat.

See the exact prompt, actual responses and checks.

Scope: one fictional text exercise in signed-out desktop ChatGPT, checked by an AI assistant on October 19, 2026. This is not independent human testing; your response may differ. The other worked examples on this page remain illustrative.

Start with the task, then the information

Suppose you want help planning a neighborhood gathering. The assistant needs the type of event, approximate group size, and the kind of checklist you want. It does not need guests’ full names, contact details, or private messages.

Write the task in one sentence before attaching anything. If a generic description is enough, use it. This gives you a simple way to decide whether more detail is actually necessary.

Take this exercise with you

Keep the complete fictional exercise, its key checks, and two fields for your own short notes in one page.

Download the one-page practice sheet (.pdf)

1 page · 47 KB · US Letter · Version October 14, 2026 · Checks and limits

How to use your practice sheet
  1. Download and open the PDF. If it opens in your browser, use its Download or Save control to keep a copy.
  2. Try the exercise, then use the checks below it. The examples are fictional; they are not a test of a real product.
  3. Type short notes into the two boxes in a compatible PDF viewer, or print and write by hand. Reopen your saved file to confirm your notes were kept.

Use your viewer’s Print control. The sheet is US Letter size; choose Fit to page if your printer uses a different paper size.

This webpage does not receive what you type into the downloaded PDF. Any PDF viewer or cloud storage you choose has its own settings. Keep private details out.

If the download does not work, the same exercise and checks remain in the guide below. The PDF is optional.

Try it: prepare an event checklist

A fictional organizer wants a checklist for a two-hour indoor neighborhood gathering for 12 adults. They have guest names, phone numbers, private messages about attendance, and the host’s exact home address.

Before opening an AI tool, decide which details the checklist needs. You are planning the steps for a small event, not sending invitations or arranging deliveries.

Choose what the checklist needs

Select only the details you would include in the planning prompt. Leave unnecessary details unticked, then check your choices.

A smaller brief can still do the job

Original informationWhat the planning prompt needs
Guest names and phone numbers“12 adults”
Private attendance messagesThe approximate group size; no message history
The host’s exact home address“An indoor gathering”; keep the address out
A two-hour durationKeep “two hours” because it shapes the plan
Unsettled budget, date and helpersLeave blanks; do not let the AI invent them

Your check: a useful answer groups preparation steps without asking for the guest list. If it invents a date or budget, say: “Remove the invented details and leave those fields blank.”

Can the task work with fewer details?

Write a short version of the request that keeps the useful planning constraints and leaves out the guest records.

Reveal one reasonable prompt

Create a preparation checklist for a two-hour indoor neighborhood gathering for 12 adults. Group it into before, during, and after the event. Leave the date, location, budget, and assigned helpers as blanks for me to fill in.

The type of event, duration, and approximate group size help shape the checklist. Guest names, phone numbers, private messages, and the exact address are unnecessary for this exercise.

Keep the private invitation list in the place you normally manage it. A useful generic checklist does not require giving the AI access to those records.

Ask how the service handles what you send

Look for answers in the provider’s current privacy notice and help pages:

  • What types of information does it collect?
  • Can staff or contractors review submitted material?
  • May interactions be used to improve models, and what choices do you have?
  • What retention periods and deletion exceptions apply?
  • What changes when you connect another application?

Write “unclear” where you cannot find an answer. Do not treat a friendly interface or a paid subscription as evidence of a particular data-handling arrangement.

Remember that context can identify people

Removing a name is a start, but an unusual job, exact date, location, and personal event may still point to someone. A safer practice exercise is often a completely fictional example.

For instance, ask for a general appointment-preparation checklist instead of uploading a relative’s medical letter. If the task truly requires sensitive records, stop and establish the appropriate approved process first.

The UK National Cyber Security Centre’s guidance (opens in a new tab) advises against putting sensitive information into public language-model services. Its broader point is to understand the provider’s terms before submitting information that could cause harm if exposed.

Distinguish access from an AI’s answer

A service may receive information through a prompt, an upload, or an enabled connection. Separately, a model can produce an inference or a mistaken statement about a person. An answer that sounds personal is not a reliable record of everything a company actually holds.

NIST identifies privacy risks (opens in a new tab) including disclosure and inference of sensitive information. This is a reason to examine real data practices, rather than assume that every AI tool has unlimited access to your life.

Use a short decision note

Before trying a new service, jot down:

  1. My task is…
  2. The minimum information it needs is…
  3. The information I will leave out is…
  4. The permission or policy question I still need answered is…

If you cannot complete those four lines, begin with a fictional demonstration. You can learn how a tool behaves without turning the exercise into a transfer of private records.

For work or someone else’s information, follow the relevant authorization and handling requirements. Personal comfort with a service is not enough to decide what may be shared on another person’s behalf.

Help if you get stuck

I cannot use an AI chat, or it adds personal details I left out

Work from the fictional event details on this page. Write a short preparation request yourself and keep only the facts needed for that task. Compare it with the smaller example prompt; no account or upload is required.

If a chatbot invents a name, address or guest list, remove that detail and ask it to use only the supplied facts. Check the revision again. If it keeps adding information, finish the short request yourself. A plausible detail is not permission to use someone’s information.

The AI asks me to upload the full guest list

Explain that you want only a generic preparation checklist and use the fictional prompt above. Decide whether the request needs that information; do not treat an AI suggestion as authorization to share it.

I cannot find a clear answer in the provider’s policy

Leave the unanswered point marked “unclear” and practice with invented details. If you need to use work or another person’s records, establish the approved process before sharing them.

Featured photograph updated October 16, 2026. Photo by LinkedIn Sales Solutions on Unsplash. Illustrative photograph.

AI assistance: AI helped draft, revise and run preliminary checks on this guide. Examples are illustrative unless a specific evidence record says otherwise. The details above distinguish recorded checks from missing evidence. Read the editorial disclaimer.

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