Privacy and security

What happens to what you write?

When you chat with Claude on claude.ai, your conversations are stored on Anthropic servers. Anthropic uses these conversations to improve the model — unless you have a paid plan where you have turned off data collection, or use the API directly.

💡 How to turn off data collection:
Claude.ai → Settings → Privacy → Turn off "Improve products for all users"

What you should never share with Claude

⚠️ Avoid pasting:
— Passwords or API keys
— Social security numbers or dates of birth
— Credit card numbers or banking details
— Sensitive health information about others
— Confidential business secrets
— Private information about third parties without consent

What you can safely share

✅ Safe to use:
— General work tasks and texts
— Code without production keys
— Anonymized data and examples
— Your own thoughts, ideas and plans
— Publicly available information

Incognito mode

Claude.ai has a temporary chat feature. Conversations in temporary mode are not saved and not used for training. Use this when working with sensitive information.

Claude at work — check with your employer

Using Claude for work tasks? Check if your company has guidelines for AI use. Many organizations have their own rules about what can be shared with external AI services — especially in healthcare, finance and the public sector.

"Share what Claude needs to help you — not more, not less." — Golden rule for AI privacy

🎯 Test your knowledge

Test yourself — completely optional, but fun! 🎯

Question 1 of 3

What should you never paste into a Claude conversation?

Passwords, API keys, social security numbers and banking details should never be shared with Claude or other AI services.

Question 2 of 3

What is the benefit of incognito mode in Claude.ai?

Conversations in incognito mode are not saved and not used for training the model.

Question 3 of 3

Who is responsible for what you send to Claude?

You are always responsible for what you send — Claude is a tool, not a legal entity with its own responsibility.