The bad actors do buy SIM cards in large quantities and there are services that will rent out the numbers for SMS verification. It substantially raises the cost for someone that wants to register 100,000 fraudulent accounts without linking accounts based on phone numbers.
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I’ve always assumed bad actors buy SIM cards and mobile numbers in huge quantities. Isnt that a lot cheaper than having to buy devices?
Regardless, requiring phone numbers impacts a lot of real customers in a negative way.
The bad actors do buy SIM cards in large quantities and there are services that will rent out the numbers for SMS verification. It substantially raises the cost for someone that wants to register 100,000 fraudulent accounts without linking accounts based on phone numbers.