I used to work on toll fraud as part of IT for a large tech organization. Not FAANG but several thousand employees.
My impression at the time was the fraud detection heuristics helped, but the root cause was scammers working with telcos overseas. Many of these companies have extremely high rates in the first place, and turn a blind eye to the practice because it makes them much of their money.
Some VoIP providers like Twilio may be the same. As a middleman / carrier, they will always profit from traffic on their network, even if they disavow it as fraudulent and wag their finger at you about it.
> Many of these companies have extremely high rates in the first place, and turn a blind eye to the practice because it makes them much of their money
Not a telco but loosely related... I will never forget the day I was working for MediaFire (~2013) and complained directly to the CFO about advertisements on the website that directly violated the advertisement policy. CFO stated that "they paid us a lot of money" and that he's late for a ping pong match then walked out of my office. Well, they might have paid the company a lot of money but I was directly not paid a lot of money and was very much burned from friends for working with scum.
Suffice to say that people in positions to do things about it should be much less forgiving about it.
My impression at the time was the fraud detection heuristics helped, but the root cause was scammers working with telcos overseas. Many of these companies have extremely high rates in the first place, and turn a blind eye to the practice because it makes them much of their money.
Some VoIP providers like Twilio may be the same. As a middleman / carrier, they will always profit from traffic on their network, even if they disavow it as fraudulent and wag their finger at you about it.