SS7 presentation at Blackhat 2017
A talk given at this year's Blackhat USA has some solutions to this issue. Here is a PDF download link from the Blackhat website for the white paper.
https://www.blackhat.com/docs/us-17/wednesday/us-17-Kacer-SS7-Attacker-Heaven-Turns-Into-Riot-How-To-Make-Nation-State-And-Intelligence-Attackers-Lives-Much-Harder-On-Mobile-Networks-wp.pdf
Biting the hand that feeds IT
