So you want to know what that person who is always on their phone is up to? If you're on the same Wi-Fi network, it's as simple as opening Wireshark and configuring a few settings. We'll use the tool to decrypt WPA2 network traffic so we can spy on which applications a phone is running in real time.
While using an encrypted network is better than using an open one, the advantage disappears if the attacker is on the same network. If someone else knows the password to the Wi-Fi network you are using, it's easy to see what you're doing at that moment using Wireshark. It can allow an attacker to create a list of every app running on the device being targeted and zero in on apps that might be vulnerable.
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Decrypting Encrypted Packets
When you use a Wi-Fi network that uses WPA2 encryption, the security of your session is based on two things. The first is the password that's used to generate a much longer number, a PSK or pre-shared key. The second is the actual handshake itself, which has to happen to establish a connection. If an attacker has the PSK to the Wi-Fi network and either observes you join the network or kicks you off for a moment, they can decrypt your Wi-Fi traffic to see what you're doing.
The content of HTTPS websites won't be able to be seen, but any plain HTTP websites you visit or any insecure HTTP requests apps on your phone makes are in plain view. This may not seem like a big deal, but in only 60 seconds, it's easy to learn a lot about the type of ..
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