how to block a free wifi signal'

hey everyine'

I get a free wifi signal..its very strong, last week I found out another neighbor was also using this signal,

now my free signal is almost half as strong, when the other guy is online.

the neighbor who is letting out this unsecured signal, doesn't know he's doing it.

now 2 of us are stealing his signal' can I block the other guy, so my signal will be stronger..

Thanks!

via Bleeping Computer Last 20 Posts http://www.bleepingcomputer.com/forums/t/509176/how-to-block-a-free-wifi-signal/