Usually connect to Walmart's WiFi but they changed their policy I guess, won't be doing that now...
Usually connect to Walmart's WiFi but they changed their policy I guess, won't be doing that now...
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Never trust an open network. Even if the company providing isn't doing anything shady, the easy at which MITM (man in the middle) attacked, can be performed means that many insecure (and some secure) networks can be spoofed with a small amount of know-how.
Always make sure your connecting to a safe, secure wifi network, in a place where you expect that network to exist at.
If your phone connects in a place you wouldn't expect it to connect, double check what it's connecting to, and if necessary, disable your wifi.
How would they do man in the middle attacks? Don't you need to trust their certificate first?
That mechanism only happens after you connect to it, you have to connect to the wifi in order to download the certificate to connect. And it doesn't apply to all open WI-FI. A someone can still spoof the wifi. The fun part is when they set up their own false "I agree to the usage" pop up page that just steals your data - standardised systems like this are easily spoofed, especially when it comes to open and insecure wifi. They could even send you a bogus certificate that routes all the traffic through their gateway, allowing them to spy on the secure connections.