You paste a long email into an AI chat tool to get help replying. The answer is great, so you keep going. Next you paste a contract, then a health question, then a bank statement. It feels like talking to a private helper.
It is not private in the way a conversation with a friend is. A few small habits keep you safe without giving up the tool. Here is how to use AI chat tools and protect your personal information at the same time.
Quick summary
- Chats you type into AI tools can be stored, reviewed, and sometimes used to train the tool.
- Never type passwords, card numbers, ID numbers, or private medical and legal details.
- Use "temporary chat" and turn off training in settings where the tool offers them.
- Replace real names and numbers with placeholders before you paste anything.
Why this matters
According to a Reader's Digest feature from April 2026, quoting privacy attorney John Pavolotsky, the business running a chatbot and the company that built it can see what goes in and what comes out. Other service providers and even advertisers may see some of it too.
Cornell Tech professor Nicola Dell adds a plainer risk. Anyone who can open your device or your account can read your chat history, just like your browser history.
The same article reports that a U.S. federal judge in New York ruled in February 2026 that attorney-client privilege does not cover what you tell an AI chatbot, and that medical privacy laws do not apply to chatbots. So a chat is not protected the way a talk with your doctor or lawyer would be.
None of this means you should stop using AI. It means you should decide what goes in before you type it.
How to do it
Step 1: Know what never to type
Keep these out of any AI chat, every time:
- Passwords and passkeys
- Credit card and bank account numbers
- Social Security or national ID numbers
- Your full name together with your home address
- Private company documents or code that is not yours to share
Be careful with sensitive topics too, such as detailed medical information, legal trouble, and deep personal struggles. For those, a real professional is the better choice.
Step 2: Swap real details for placeholders
You can still get help with a sensitive document without exposing it. Before pasting, replace names, numbers, and addresses with simple labels.
- "Maria Santos" becomes "[Client A]".
- "14 Palm Street" becomes "[Home address]".
- "Account 5521 8840" becomes "[Account number]".
The AI can still rewrite the email, spot the weak clause, or summarize the letter. You fill the real details back in at the end.
Step 3: Change two settings
Open the settings of the AI tool you use most and look for these:
- Temporary chat. Many tools offer a mode that does not save the conversation. Use it for anything personal.
- Training toggle. Many tools let you stop your chats from being used to improve the AI. For most chatbots this is an opt-out setting, meaning it is on until you switch it off. Look for wording about data, privacy, or "improve the model."
Step 4: Clean up what is already there
If you have shared something you wish you had not, delete the chats, then clear the tool's saved "memory," which can keep facts about you even after a chat is gone. The company may keep a backup for a period, often around 30 days, and a lawsuit can require a company to preserve data. So deleting helps, but prevention works better.
A real example
Say you want help writing to your landlord about a broken heater. You could paste your full lease with your name, address, and rent amount. Instead, you type: "My landlord is [Landlord]. My lease says repairs must be done within 14 days. The heater has been broken for 20 days. Write a polite but firm email." You get a strong draft, then add the real names yourself. The AI never saw your address or your lease.
Check the tool's own rules
Every AI tool has a different privacy notice. Skim for three things: whether chats are used for training, how long they are kept, and how to delete them.
Next, read how to talk to AI so it actually helps you, and our guides to fact-checking AI and spotting AI scams.
Try this now
Open the AI tool you use most. Find the settings and look for a data or privacy section. Turn off training on your chats if the option is there, then start your next personal question in a temporary chat. It takes about three minutes.
Frequently asked questions
Are my AI chats private?
Not fully. Chats can be stored by the company, seen by service providers, and read by anyone with access to your account or device. Treat a chat like something that could be seen later.
What should I never type into an AI chatbot?
Passwords, card or bank numbers, ID numbers, your full name with your address, and private medical or legal details. When in doubt, replace real details with placeholders.
What is a temporary chat?
It is a mode offered by some AI tools that does not save the conversation. It is a good choice for personal questions. Check whether your tool has one in its menu.
Can I stop AI from learning from my chats?
Often yes. Many tools have a setting to turn off training on your conversations, and for many it is switched on by default. Look in the data or privacy settings.
Source: Reader's Digest, "Think Twice Before You Talk to an AI Chatbot About These 5 Things" (April 2026).