Anyone that puts up a sign like this is an idiot. A complete fucking moron. Why did you buy a router, set it up so it broadcasts that it’s willing to accept connections, and then get in a tizzy about someone actually connecting to it? Just set the damn thing up correctly!
Uhh, hello, it’s not just the morons that don’t lock their shit down. Script kiddiez have enough scripts out there that make cracking WPA quick and easy. And most wireless routers only support this weak ass encryption.