The fundamental flaw with the phone system is it’s all or nothing. It’s difficult to get in, but once you’re in there’s zero controls (DNS used to and somewhat still does also suffer from this).
STIR/SHAKEN should have resolved this. Unfortunately, telecom carriers didn’t do the last step of banning any telco (mostly VoIP providers) prone to allowing scammer accounts in. They’d also have to filter US numbers calling in from other countries to validate and ensure they are real.
All of this being work, and telecoms, especially those in the US, hate doing work.
The fundamental flaw with the phone system is it’s all or nothing. It’s difficult to get in, but once you’re in there’s zero controls (DNS used to and somewhat still does also suffer from this).
STIR/SHAKEN should have resolved this. Unfortunately, telecom carriers didn’t do the last step of banning any telco (mostly VoIP providers) prone to allowing scammer accounts in. They’d also have to filter US numbers calling in from other countries to validate and ensure they are real.
All of this being work, and telecoms, especially those in the US, hate doing work.
The phone system doesn’t have a way to identify people other than Caller ID, and that’s vulnerable to various forms of spoofing.