I had questioned about the security for X20. And I also submitted other for this but no solution. https://community.tp-link.com/en/home/forum/topic/516494 Whatever, I reset my 3 decos to be MESH. And

After setting up the deco, I found something weird. The App shows some connected phones that I don't know. Most of time these were not connected but they did. I am sure that I never share the password

Hi, The diagram below is the distribution of my home network. Red line means the connection is using cable (RJ45). Brown lin means if any one of these connections is setup, the modem and all decos are