Unfortunately, the "protocol" doesn't have any emphasis on security so far, its all a repeat of HTTP -> HTTPS.

However I feel the tooling built around MCP has been a lot and makes your work easier.

The perfect use today would be using a locally running MCP servers for execution of code[1], manipulation of local files etc.

1. CodeRunner - Generate and run LLM code locally on Apple containers (https://github.com/BandarLabs/coderunner) (I am one of the authors)