Arstechnica | AT&T/T-Cellular anti-robocall partnership doesn’t in reality block robocalls

A smartphone with an incoming phone call from an unknown caller.

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announcement ^( that they “put variations apart to battle undesirable robocalls for purchasers.” In particular, the firms stated they’re now the use of the brand new SHAKEN/STIR generation to resolve whether or not Caller ID numbers are being spoofed in calls made between the two carriers.

Theoretically, carriers may use this Caller ID authentication generation to mechanically block calls that fail the authentication check. However that is not what is going down now. For instance, AT&T informed Ars that it is the use of Caller ID authentication as one knowledge level in its anti-robocall set of rules however that it is not blockading calls only in keeping with whether or not they are not authenticated.

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