SMS Pumping

SMS pumping (also called artificially inflated traffic, AIT) is a fraud where attackers automate phone-number entry on websites that send an OTP or verification SMS, generating large volumes of paid A2P traffic to numbers in collusive ranges that share revenue with the fraudster. Mitigations include CAPTCHA, IP-based rate limiting, MSISDN range blocking, and anomaly detection on registration funnels.

Categories: Radio Access NetworkSignalingIdentity and Subscriber

SMS Pumping in context

The radio access network is where mobile devices attach to the operator's infrastructure. Attacks in this layer include IMSI catching, rogue base stations and downgrade attacks; defenses rest on mutual authentication, integrity-protected signaling and Open RAN supply-chain hygiene.

Signaling protocols carry the control-plane messages that set up calls, register subscribers and route SMS. SS7, Diameter, GTP-C and SIP are the four dominant families, and interconnect exposure of any of them is treated by GSMA as top-tier telecom risk.

To place SMS Pumping in the wider telecom-security picture, review IRSF, Rogue Base Station (Fake BTS), Wangiri Fraud, Behavioral Signaling Detection, Cleartext (Plain Text) and Lawful Interception Abuse Risk: each entry cross-references back to this page so you can walk the topic in either direction.

Related terms

Related topic hubs

  • SMS Firewall SMS spam, phishing, A2P bypass and MAP-layer SMS filtering.
  • Signaling Firewall Unified SS7/Diameter/GTP/SMS signaling firewall framework.
  • SS7 Security SS7/MAP/CAP/SCCP attacks and defenses across 2G/3G interconnect.
  • Diameter Security 4G/LTE Diameter threats across IPX/roaming and DEA defenses.

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