Need ideas for a project

hello, wise people of the internet,

I need your help as much as I can get, the issue is;
I need to figure out a project or theme for my thesis so I can finally get that diploma.
The mentor and I discussed few times about it , and he said it cant be " blackhatty" and I should write about wireless security with wireshark as a tool. so come on people , give me your best ideas :D

P.S. I was thinking about making it about how easily you can sniff data when connected to a network while using wireshark but dont know with what to fill the middle of the project since the last part should be how to defend against it (WPA3 encryption)...