Why Public #Wifi is a…Hazard
https://medium.com/matter/heres-why-public-wifi-is-a-public-health-hazard-dd5b8dcb55e6 Exposes one’s past network usage; ergo, don’t put your street into your home’s SSID
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Wouter removes his laptop from his backpack, puts the black device on the table, and hides it under a menu. A waitress passes by and we ask for two coffees and the password for the WiFi network. Meanwhile, Wouter switches on his laptop and device, launches some programs, and soon the screen starts to fill with green text lines. It gradually becomes clear that Wouter’s device is connecting to the laptops, smartphones, and tablets of cafe visitors.
On his screen, phrases like “iPhone Joris” and “Simone’s MacBook” start to appear. The device’s antenna is intercepting the signals that are being sent from the laptops, smartphones, and tablets around us.
“More text starts to appear on the screen. We are able to see which WiFi networks the devices were previously connected to. Sometimes the names of the networks are composed of mostly numbers and random letters, making it hard to trace them to a definite location, but more often than not, these WiFi networks give away the place they belong to.
We learn that Joris had previously visited McDonald’s, probably spent his vacation in Spain (lots of Spanish-language network names), and had been kart-racing (he had connected to a network belonging to a well-known local kart-racing center). Martin, another café visitor, had been logged on to the network of Heathrow airport and the American airline Southwest. In Amsterdam, he’s probably staying at the White Tulip Hostel. He had also paid a visit to a coffee shop called The Bulldog.
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