@micahflee lemme guess: @eff just took a multi-network eSIM and multi-network WWAN modules to scan for "#deauth" / "#EvilTwin" attacks?
Cuz I remember @heiseonline or @golem actually suggest this as a method to detect #IMSIcatchers without requiring an expensive #SDR:
- By precisely looking when which WWAN stick (for #3G back then) got disconnected and warning if they all got disconnected & reconnected at the same time...
AFAIK #GSMK uses that same technique for their #Baseband-#Firewall to automatically detect #Interception attempts and deploy countermeasures!