https://www.reddit.com/r/whatisthisthing/comments/9ixdh9/found_hooked_up_to_my_router/e6nh61r/
"Roommate is dumb"
He'd be dead if he was my roommate. Stupid and dead.
Another reason to ONLY use you cell's 4G/LTE connection when traveling.
And the weakest link in the security-chain is ... human!