When a criminal takes over someone's phone number, every text code and callback you send goes to them. How SIM swaps and port-out fraud actually work, why businesses end up holding the loss, and the practical controls that close the gap.
A phone number fraud score turns a dozen quiet signals about a number into one risk rating. Here's what goes into it, how to read it, where to set your cutoffs, and the mistakes that cause good customers to get flagged.
The area code and prefix tell you which carrier a number started with, not which one it's on today. How carrier lookups really work, why porting breaks the cheap ones, and what the answer is good for.
A text code proves someone has a phone in their hand right now. It doesn't prove whose phone it is or who's holding it. Here's what phone-based identity checks actually confirm, and how to cover the gaps.
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