SMS verification abuse at scale: releasing our open source disposable phone number list
ID: e49ef7ac-cbe5-59f6-aea2-fe78de40f33c
STIX ID: report--e49ef7ac-cbe5-59f6-aea2-fe78de40f33c
Feed Name: Security Boulevard
Castle published an open-source, curated list of the 1,000 most active disposable phone numbers used in SMS verification abuse, updated daily. The post explains why disposable phone numbers matter for large-scale fake account creation, how the numbers are collected and ranked from observed abuse telemetry, and recommends combining this signal with device, behavioral, and proxy detection for effective fraud prevention.
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