Question

When using WPA2 security on your wireless router with a pre-shared key (personal mode), can clients who are authorized to connect to the network (because they have the key) eavesdrop on each other’s traffic? Why or why not? Please provide sufficient technical detail to show your understanding.

Answer 1

The WPA2 security system is basically three steps

1. Password Verification

2. Handshake Protocol to establish connection

3. Data Transfer between Users and Router ( let's say WI-FI)

Neo the first step is common for all user as there is usually a common password for all users in this system.

But the issue for hackers or eavesdropping comes in the second step where we establish the connection with each of the devices separately, where we even with the same encryption standards have separate unique keys.

Now even if we have the tools to Analyse all the data getting out of the router, we'll not be able to Decrypt any packet that isn't meant for us or that doesn't open with the key we have.

And there is now way if getting the key from the other user via the router so we can eavesdrop the traffic but we'll not be able to read or make sense of the encrypted data

Hope it helps if any doubts ask in comments