Pixel8

Hi. Due to design errors in my urbanization, it is impossible for me to have wifi connection in my house. The best solution I found was to pay someone who lives nearby a part of his plan to share the internet through a signal extender located in my house. The person who lives next to my house did the same, that is, there are 3 families sharing the same internet plan, in my case and the other person's with an extender and an additional router each. Is there any risk in terms of security/privacy of doing this? And if yes, how could I counter it.

Working perfect on my pixel 8.