unknown devices on my network

[TheFelange]

Ok bit of a strange one...

I have a Hub 4 and i keep getting notifications that there is suspicious activity on my WiFi. I've changed the password for the network from default twice and its still happening. The strange bit comes in when I look at connected devices there are wired devices that I just dont own.all the devicesThe TiVo I do own and it is wired t my Hub 4, the only other device that is wired is my PS4.

The other strange thing is that I get alerts on my S10 that devices are casting on my network...but they arent because i dont own them. After a bit of sleuthing on my s10 in the Google home app i found the peoples names that are using the google home devices and they live nowhere near me. 

Any ideas on how to fix this issue because im stumped, ive changed paswords etc and its still happening after password changes. It usually only happens later on at night but it sometimes happens during the day too and when it does our internet gets really really slow.

Thanks in advance 

TheFelange

[MikeRobbo]

Use the Mac filter then reboot the Hub.

[TheFelange]

i get what your saying but all of the names of the devices matched up surname kids name husbands name ( i know these names because that is what some of the devices show up as on my phone on the google home app)

[gary_dexter]

OK, well, that aside, remove the powerline booster and see what happens going forwards.

[TheFelange]

ok that seems to have worked, I just dont understand how that can happen with a powerline adapter, so strange...

thanks for all your help, i'll keep an eye on it and see if the magical wired devices ever return.

[MikeRobbo]

Maybe the Power Line Adaptors have a memory; where did you get them from ?

[TheFelange]

Brand new via VM

[gary_dexter]

Because they use your mains electrical circuit and you can get "overlap" from a neighbouring property, especially if they are using powerline plugs as well.