SOLVED: Random "computers" showing up on my network
I just got my new computer all set up and noticed two items besides our household computers on there. The odds of them knowing the SSID -AND- figuring out the password are slim and none. I've gone into my router's access filters and made it so only the MAC addresses of the hardware I've reserved DCHP for can get on our network. Saved the changes, reset the router and the devices are still showing. Thoughts? Time for another password overhaul? (Pictures attached). Note how if I expand the "machine" called A1B2D7000000, it has a shared folder called "canon_memory" (FWIW). If I try to access the other one (NPI....), it says it can't connect. Currently, we aren't sharing anything as far as documents, so nobody should be able to access anything -- assuming it is even a human trying to get on our network.
I'm just baffled as how there could be anything outside of this house on there due to the strong security/hidden SSID and my router only allowing access to items with the MAC addresses I have personally entered.