I know exactly what you are talking about. It was on a Reddit sub called r/BlackOps and it had to do with a Hawaiian property (I think a vodka distillery?) kinda in the middle of nowhere where a contractor working on the site investigated a large concrete pad that had SSID's leaking out of it. Researchers found a lot of strange human trafficking connections.

https://www.reddit.com/r/BlackOps/comments/4fs7a8/question_why_would_there_be_30ish_wifi_networks/

https://www.reddit.com/r/conspiracy/comments/cqvgir/the_mysterious_wifi_networks_in_hawaii_a_long/

I know exactly what you are talking about. It was on a Reddit sub called r/BlackOps and it had to do with a property (I think a vodka distillery?) kinda in the middle of nowhere where a contractor working on the site investigated a large concrete pad that had SSID's leaking out of it. Researchers found a lot of strange human trafficking connections.

https://www.reddit.com/r/BlackOps/comments/4fs7a8/question_why_would_there_be_30ish_wifi_networks/

https://www.reddit.com/r/conspiracy/comments/cqvgir/the_mysterious_wifi_networks_in_hawaii_a_long/