The blog
Field notes on caller fraud.
Pay-per-call quality, screening tactics, and what the lookup data teaches us. New posts monthly.
announcementpay-per-callfraud
Introducing CallerSift: fraud screening for every inbound call
Pay-per-call buyers lose real money to calls that were never real callers. CallerSift screens every inbound number before the call routes, so fraud never reaches a payable minute.
July 12, 2026 · 2 min read
intelscreening
Line types, explained: what a number is tells you who is calling
Mobile, landline, fixed VoIP, non-fixed VoIP, toll-free. What each line type means for call quality, and where the false positives hide.
July 11, 2026 · 3 min read
fraudtactics
The anatomy of a burner-app call
What actually happens when a TextNow number dials your campaign, and why line type gives the whole game away before the first ring.
July 10, 2026 · 3 min read
reportsquality
What your block rate is really telling you
A 12% block rate is not a fraud problem. It is a traffic-source report card, and here is how to read it line by line.
July 9, 2026 · 2 min read