Killing robocalls: How SHAKEN/STIR blocks spam calls with caller ID authentication

Based on the SHAKEN/STIR framework, AT&T, T-Mobile, and Comcast will now verify phone calls between the companies’ networks.
Jason Cipriani for CNET:SHAKEN/STIR is a two-pronged protocol that AT&T and T-Mobile will use to verify that the incoming caller is legit. It will also work with home phones running on Comcast’s service. The end result is that Comcast, T-Mobile and AT&T will authenticate caller ID among one another, so you have more assurance that the person who&rsq