One of the first steps to combat unwanted spam robocalls is to authenticate the call and alert customers that an incoming call is — or isn’t — actually coming from the number that comes up on Caller ID, or whether it is spoofed to disguise its origin. While this doesn’t prevent the robocall itself, the recipient at least has more information to help them decide whether or not to answer it.
AT&T and T-Mobile US have announced that they are now using the STIR/SHAKEN framework to provide cross-network call authentication that will notify their users as to whether a call’s ID is verified.
