> How do you verify that the SMS is really from your service? The way the phone system works I don't think there is an actual way. It's inherently insecure fro

> How do you verify that the SMS is really from your service? The way the phone system works I don't think there is an actual way. It's inherently insecure from multiple angles. Unless there is a way to verify it, reliably, that I don't know about but I tried looking into this before and found essentially nothing useful.