Bidding-Down Attack

Bidding-Down Attack in context

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

Signaling protocols carry the control-plane instructions that set up calls, register subscribers, hand over sessions 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 FS.11 / FS.19 / FS.20 as a top-tier telecom risk.

To place Bidding-Down Attack in the wider telecom-security picture, review Telecom Penetration Testing, O-RAN Interfaces (A1, E2, O1, O2), Base Station (BS), Open RAN, Lawful Intercept and P-CSCF Discovery.

Related terms

• Telecom Penetration Testing
• O-RAN Interfaces (A1, E2, O1, O2)
• Base Station (BS)
• Open RAN
• Lawful Intercept
• P-CSCF Discovery
• BTS Impersonation (Fake BTS)
• Firewall

Related topic hubs

• Signaling Firewall Unified SS7/Diameter/GTP/SMS signaling firewall framework.
• Diameter Attacks S6a IDR/PUR/CLR abuse, subscriber tracking, LTE signaling attacks.
• LTE Security Training Training on 4G/LTE core, Diameter, NAS and RRC security.
• SS7 Security SS7/MAP/CAP/SCCP attacks and defenses across 2G/3G interconnect.

More from the TelcoSec Glossary

Browse the full TelcoSec Glossary, the Ultimate Guide to Mobile Network Security, or the P1 Arsenal of telecom-security tools.