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What I don’t understand is why spam-friendly telephone exchanges are allowed to continue to send those spam calls. It doesn’t seem like a difficult technical p
by eureka-belief 3y ago
What I don’t understand is why spam-friendly telephone exchanges are allowed to continue to send those spam calls. It doesn’t seem like a difficult technical problem. Spammers have to send messages from a number, which aren’t infinite supply. It’s similar to the “Report as Spam” feature that often exists with email providers.
- LinuxBender 3y agoSpammers have to send messages from a number, which aren’t infinite supply. The numbers are spoofed. They really do have a near infinite supply. If one has their own SS7 link they can spoof any number. There are plenty of shady VoIP services that enable this.
- acdha 3y agoThe carriers are paid money that deliver calls from peer networks regardless of whether you want them. If they turn a blind eye to spam, they make more profit whereas fighting it costs them money and they have no downside unless it’s so bad that you cancel your phone service entirely. This is over-simplified because there are multiple layers of companies and when VOIP was introduced they decided not to spend money validating identity and are now clumsily bolting it on with things like STIR/SHAKEN, but it’s basically a classic negative externality where the costs we born by parties other than the ones making the decisions. You can see the difference in European countries where the sender pays for the call/message and spam is far less of a problem because it costs too much to spew messages with a successful sale rate well under 1%.