A: Hi! Thank you for your concern about data security.

Regarding end-to-end encryption (E2EE), our system currently doesn't implement this feature. We understand that data security is crucial for users, especially for mind maps that might contain sensitive information.

Our current security measures include:
1. HTTPS encryption for data transmission
2. Industry-standard encryption for data storage
3. Regular security audits and updates

If you have specific security requirements, we recommend:
1. Avoiding storing highly sensitive information in mind maps
2. Using strong passwords to protect your account
3. Regularly backing up important data

We are evaluating the technical feasibility of implementing end-to-end encryption, which requires balancing:
- User experience
- System performance
- Development complexity
- Maintenance costs

If you have specific security requirements, please feel free to elaborate, so we can better assess how to meet your needs.