[EGreg]

Is there something like echo I can build myself for a local network?

What is some advice you can give for me to build my own "Jarvis" like Zuck is doing but be reasonably sure that the components aren't going to "phone home" somewhere or be rooted?

Locking down my network?

[bamie9l]

There's some more info about that here https://news.ycombinator.com/item?id=10834269