It probably wasn't a simultaneous attack, they probably penetrated over a long period of time. The defenders just found them all simultaneously (you find one, y

It probably wasn't a simultaneous attack, they probably penetrated over a long period of time. The defenders just found them all simultaneously (you find one, you go looking for the others) > Why not just bribe employees to listen in on high profile targets? Developing assets is complicated and difficult, attacking SS7 remotely is trivial, especially if you have multiple targets to surveil