How to Use ChatGPT Safely in 2026
To use ChatGPT safely, treat it as a practical assistant rather than a secure vault or a guaranteed source of truth. Keep sensitive data out of prompts, review your privacy controls, and verify important claims before acting on them.
On this page12
- What should you never share with ChatGPT?
- How can you make a prompt safer?
- How do you check ChatGPT privacy settings?
- How can you spot and handle wrong answers?
- What are safe prompt habits?
- How can you use ChatGPT safely at work, school, or with children?
- Quick action checklist
- Frequently asked questions
- 1. Is ChatGPT safe to use for personal information?
- 2. Does turning off 'Improve the model for everyone' delete my chats?
- 3. Is Temporary Chat completely private?
- 4. How can I tell whether a ChatGPT answer is wrong?
These habits do not require technical expertise. A few careful choices before you type, combined with a repeatable fact-checking routine, help you get useful results while reducing avoidable privacy and accuracy risks.
What should you never share with ChatGPT?
Do not paste information that could expose your identity, finances, health, employer, customers, or accounts. If invented, masked, or generalised details will work, use them instead.
Data handling can vary by plan, workspace, connected apps, settings, and applicable terms. For confidential work, use only an organisation-approved tool and follow your company policy.
How can you make a prompt safer?
Use placeholders that preserve the task. Ask for help with a customer complaint about a delayed delivery instead of pasting a customer's real name, address, and order number. For coding help, remove credentials, production data, and proprietary details that are not needed.
How do you check ChatGPT privacy settings?
Menu names and available controls vary by device, region, plan, and workspace. Check the labels in your own interface before relying on a specific option.
- Open account settings: open your profile or account menu and select Settings.
- Review model-improvement controls: in Data Controls, find 'Improve the model for everyone' or its current equivalent. Turning it off means new conversations are not used to train models under that setting, though they still appear in your history.
- Check chat history: regular chats remain in your account until deleted or removed under an applicable workspace policy. Closing the browser tab does not make a chat temporary.
- Consider Temporary Chat: choose Temporary Chat when available. It stays out of regular history and is not used to improve models, though it may be retained for up to 30 days for safety monitoring. Do not enter secrets even in this mode.
- Review memory and connected apps: check Personalization or Memory settings and review which connected apps can access information. Disconnect apps you no longer need.
- Delete unwanted chats: open conversation options, choose Delete, and confirm. Deleted chats are removed from your view and scheduled for permanent deletion under OpenAI's stated retention policy.
How can you spot and handle wrong answers?
ChatGPT can produce fluent answers with incorrect or outdated facts, fabricated details, or citations that do not support a claim. This is often called an AI hallucination. Confident wording is never proof of accuracy.
- Break the answer into checkable claims: separate dates, numbers, names, definitions, and recommendations instead of treating a long response as one fact.
- Ask for evidence: request sources for factual claims and ask which statements are uncertain. Treat the response as a lead, not as proof.
- Open the original sources: follow links yourself and confirm that the cited page exists, is current, and actually supports the statement.
- Cross-check important points: for consequential questions, compare independent reliable sources, prioritising primary documents, official guidance, and product documentation.
- Correct or stop when evidence is weak: ask ChatGPT to revise using verified sources you provide, or stop relying on the output if it remains unsupported.
What are safe prompt habits?
State the task and constraints without exposing unnecessary personal or organizational details. Compare these before-and-after examples:
| Scenario | Unsafe prompt (Avoid) | Safer prompt (Use instead) |
|---|---|---|
| Personal finance | Here is my bank statement, card number, and spending. Tell me what to do. | Using fictional categories—housing 40%, food 20%, transport 10%, other 30%—suggest a basic monthly budget. |
| Workplace writing | Summarise this customer file with names, phone numbers, account IDs, and contract details. | Summarise this fictional customer-service scenario; highlight the issue, action taken, and next step. |
| Technical debugging | Here are production logs, an access token, server details, and customer data. Find the bug. | Here is a redacted error message and a minimal fake-data sample. List likely causes and safe diagnostic steps. |
How can you use ChatGPT safely at work, school, or with children?
Quick action checklist
Frequently asked questions
1. Is ChatGPT safe to use for personal information?
Use caution and avoid sharing highly sensitive information such as passwords, identity documents, card details, medical records, or private information about someone else. Redact identifying details whenever possible.
2. Does turning off 'Improve the model for everyone' delete my chats?
No. That control affects whether new conversations are used to train models; it does not delete existing conversations or remove them from your chat history.
3. Is Temporary Chat completely private?
Temporary conversations stay out of regular chat history and are not used to train models, but OpenAI notes they may be retained for a limited period (up to 30 days) for safety and abuse monitoring. Never enter passwords or secrets even in Temporary Chat.
4. How can I tell whether a ChatGPT answer is wrong?
Identify the specific facts that matter, ask for sources, and open those sources yourself. Compare important details—especially dates, statistics, legal or medical claims, and technical commands—with independent official references.
Frequently Asked Questions
Is ChatGPT safe to use for personal information?
Use caution and avoid sharing highly sensitive information such as passwords, identity documents, card details, medical records, or private information about someone else. Redact identifying details whenever possible.
Does turning off Improve the model for everyone delete my chats?
No. That control affects whether new conversations are used to train models; it does not delete existing conversations or remove them from your chat history.
Is Temporary Chat completely private?
Temporary conversations stay out of regular chat history and are not used to train models, but OpenAI notes they may be retained for up to 30 days for safety and abuse monitoring. Never enter passwords or secrets even in Temporary Chat.
How can I tell whether a ChatGPT answer is wrong?
Identify the specific facts that matter, ask for sources, and open those sources yourself. Compare important details—especially dates, statistics, legal or medical claims, and technical commands—with independent official references.
Sources
Tags: AI Tool GuidesPrivacy TipsHow-ToSettings