Things You Should Never Tell ChatGPT (Privacy & Safety Guide for Smart AI Use)

2026-02-20 · Source: Artificial Intelligence in Plain English - Medium · Field: Technology & Digital — Artificial Intelligence & Machine Learning, Cybersecurity & Data Privacy · Depth: Fundamental Awareness, short

Summary

This guide outlines critical information users should never input into AI chat tools like ChatGPT to protect privacy, accounts, and personal safety. It emphasizes treating AI chats as public-facing tools, advising against sharing sensitive, personal, or security-related data. Specifically, users should avoid entering passwords, financial information (credit card numbers, bank accounts), government ID details (passport, SSN), exact addresses or phone numbers, private medical records, other people's private information, confidential work or school documents, and sensitive security details (alarm codes, network passwords). The guide also cautions against using AI as a secret vault for emotional confessions with identifiable details, promoting a "describe the situation, remove sensitive details" approach for safe interaction.

Key takeaway

For IT professionals and general users interacting with AI tools, you should adopt a "privacy-first" habit by never inputting sensitive personal, financial, or security information. This practice safeguards your data against potential exposure, even with existing privacy protections. Always remember that AI is a tool for learning and support, not a secure repository for secrets, and should not replace professional advice.

Key insights

Never share sensitive personal, financial, or security information with AI chat tools.

Principles

• Treat AI chats like public forums.
• Prioritize privacy in AI interactions.
• Summarize, don't copy, private material.

Method

To safely use AI, describe situations generally while removing all sensitive details. Use placeholders for personal information when seeking help with formats or troubleshooting.

In practice

• Use placeholders for login credentials.
• Remove identifiers from financial documents.
• Keep emotional confessions general.

Topics

• AI Privacy
• Data Security
• Responsible AI Use
• Personal Data Protection
• ChatGPT Safety

Best for: General Interest, IT Professional, Security Engineer

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Editorial summary, takeaway, and curation by AIssential. Original article published by Artificial Intelligence in Plain English - Medium.