I could be wrong but that scenario is doubtful
by mrmacfixit - 12/27/12 5:20 AM
In Reply to: Actually.. by naomigin
Your Modem is the interface between your computer and the computers at the other end.
Your telephone wires terminate in your apartment and are connected to your Modem/Router.
Your Modem/Router is then directly connected to your Internet Service Provider and, if you think back, you had to supply a username and password for the modem/router to begin to work.
Now you have a modem that is keyed to your account.
Tapping the wires in the basement would not provide internet access, on your account, for the upstairs person as any computer has to communicate through a modem and a regular DSL line does not allow two modems to be on at the same time.
Now, if your Modem/Router is a wireless one, and from your previous posts it seems that you may have one of those, he could be using your Wireless signal to to access the internet in the same was as any of your wireless devices do.
Make sure that your Security is at least WPA, see Bob's post, and change the password immediately.
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