One time I tried using these. The internet worked fine but connections to other things on my network was very intermittent. I found out that I was switching between my own router and my neighbor's. The signal was traveling out of my house and into my neighbor's over the power lines.
> The signal was traveling out of my house and into my neighbor's over the power lines. I do not recommend Ethernet over Power any more.
For what it's worth, you could turn on the built-in encryption within most Powerline adapters. (Usually a button labeled "Security" or similar). Then you can leak anything you want, and still be reasonably safe.
I don’t understand, what you’re saying doesn’t really make any sense. Were they also using Ethernet over power devices? Even so they typically have a setup process that negotiate the encryption keys between devices in your own home.
I do not recommend Ethernet over Power any more.