3 articles.
Fraud prevention
No public list ranks SMS pumping countries. How to sort destinations into allow, gate and block from published sources and your data, and which ranges to block.
12 min read
Fraud prevention
Why identity and messaging providers block voice and SMS codes as suspected toll fraud, what triggers it, and a pre-call check recipe for developers.
7 min read
Fraud prevention
IRSF is fraud where attackers trigger calls or texts to numbers they profit from. No free IRSF number database exists; use range lists and line-type checks.
8 min read
