If you wouldn’t hand your house keys to a delivery driver, why hand your credentials to AI? In this Principles in Practice video, Anand Srinivas, VP of Product & AI at 1Password, explains a critical rule for secure AI use: Raw credentials should never be shared with large language models. Instead of sharing secrets, use them securely: Don’t send raw credentials over the data channel of a protocol like MCP Use proxies and secure autofill instead of sharing secrets Keep credentials out of prompts, embeddings, and fine-tuning data.