Is our data safe when adding AI to a MERN app?

Yes when the architecture is designed for it. MongoDB Atlas offers Client-Side Field Level Encryption for sensitive fields, so embeddings for those fields can be generated after decrypt in your Node.js process without ever storing plaintext in the cluster. LLM API calls can be routed through your own AWS Bedrock or Azure OpenAI deployment under a Business Associate Agreement for HIPAA workloads. For fully offline requirements, open-weight models running on your Node.js backend can generate embeddings without any external API call. Acquaint Softtech operates under ISO 27001 certified controls.