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Police allege ‘evil twin’ in-flight Wi-Fi used to steal info
(www.theregister.com)
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this post was submitted on 01 Jul 2024
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Use a VPN mitigates this doesn't it?
This would only be an interim solution. The attacker here sets up a fake github.com and collects credentials. So, VPN would be first trying to route over some internal hostname/IP address and probably just fail.
However, if everyone uses some VPN, the attacker can start imitating the VPN server. Or all the common ones. Redirect all traffic to a fake myvpnname.com/login with a message "you're using your device from a suspicious location, please confirm your credentials". You're on a plane, so you think this makes sense, punch in your password and it's gone!
This wouldn’t work. Your VPN would fail to connect because the attacker wouldn’t have the right encryption key. The only way to successfully mimic the VPN provider would be to be there the first time the user installed the VPN software.
With a VPN, the only real attack vector here is to block the VPN traffic and hope the user disables it or doesn't notice it didn't connect. No modern VPN will handshake with a spoofed server so it will just never connect. In some cases, the connection might fail silently enough to fool someone like this, but basically every mainstream app these days is pretty vocal about that for exactly this reason. As of Android 13, the default behavior is never to pass traffic outside the VPN unless the user explicitly turns it off. On other platforms this is dependent on the specific app.