if you post a picture of a funny nearby wifi name that's unique and been around for a few months or so, i can tell you the gps coordinates where you found it to within a few hundred feet.
if you aren't comfortable posting your approximate location, don't post the wifi name!
if you want to know how, then let me tell you about wigle
mildly pleased that my extremely rare wifi name has the wrong location. though it is the only one in the entire country. it has the city right but it's many miles away from where i currently live and several blocks away from where i used to live.
in an episode of @animeisforjerks that will go up at the start of next month we talk about cyberstalking, because there's a really hilarious cyberstalking scene in odd taxi, and i brought up the fact that a sufficiently motivated attacker could basically always figure out where you live if you post on social media at all. opsec1 is a lot like the locks on your house. the lock doesn't keep people out, it keeps out anyone insufficiently motivated to get into your house. if the government or the yakuza or whatever wants to be in your house badly enough, there's honestly not much you can do to stop them. we all get to live with the illusion of privacy because for most of us there's nobody that motivated who wants to hurt us or steal our stuff.
1: god i hate that term, when will computer nerds stop pretending to be the military
opsec is important for certain spaces not made of computer nerds or the military. I think computer nerds should just stick to "net safety" or "web hygiene" as their term of choice for "privacy on the internet". like what operation are you securing dweeb, linux?