> For the complete documentation index, see [llms.txt](https://selen-ai.gitbook.io/selen-ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://selen-ai.gitbook.io/selen-ai/data-security.md).

# Data Security

Selen AI adopts a **Zero-PII Architecture** that prioritizes user privacy and data security:

* **PII-Free Design**: The platform is built from the ground up to avoid the storage of personally identifiable information (PII), reducing privacy risks.
* **End-to-End Encryption**: All sensitive data is encrypted both at rest and in transit using **TLS 1.3**, ensuring that data is protected during transmission and storage.
* **Immutability and Traceability**: Transactional and configuration changes are hashed using **SHA-256**, creating an immutable record for tamper-proof auditability and ensuring transparent traceability of all operations.

This architecture ensures high levels of security, safeguarding user privacy while maintaining integrity and transparency of platform activities.