How Claude Cowork Handles Your Data
Understanding security is essential when giving an AI access to your files.
The Sandbox Model
Claude Cowork runs in an isolated Apple VZVirtualMachine:
- Isolation: Operations occur in a contained environment
- Permission-based: You grant access to specific folders
- Transparent: All actions are logged for review
- Controllable: You can stop operations at any time
Data Privacy
Key points about your data:
- Files are processed locally where possible
- Anthropic has usage policies restricting data training
- You control what folders Claude can access
- No permanent storage of your file contents
Best Practices
Do:
- Grant access only to necessary folders
- Review action logs periodically
- Use separate folders for sensitive work
- Start with non-critical files to learn
Don't:
- Grant access to entire home directory
- Process files containing passwords or keys
- Use for files under regulatory restrictions (HIPAA, etc.) without review
- Assume any AI tool is appropriate for all data
Enterprise Considerations
For business use, consider:
- Your organization's AI usage policies
- Data classification requirements
- Regulatory compliance needs
- Audit and logging requirements