Wondering if maybe someone got clever with SS7 or some other signaling protocol and found a way to DoS using it, seems like a dumb way to burn it so I am probab

Wondering if maybe someone got clever with SS7 or some other signaling protocol and found a way to DoS using it, seems like a dumb way to burn it so I am probably wrong and it will turn out to be some backend service everyone uses got popped.