P-CSCF Discovery (Proxy-CSCF Discovery)

P-CSCF Discovery 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 P-CSCF Discovery in the wider telecom-security picture, review Bidding-Down Attack, Lawful Interception Abuse Risk, Lawful Interception Architecture, Revenue Assurance, Telecom Penetration Testing and Chain of Custody: each entry cross-references back to this page so you can walk the topic in either direction.

Related terms

• Bidding-Down Attack
• Lawful Interception Abuse Risk
• Lawful Interception Architecture
• Revenue Assurance
• Telecom Penetration Testing
• Chain of Custody
• O-RAN Interfaces (A1, E2, O1, O2)
• Lawful Intercept

Related topic hubs

• VoLTE Security IMS/VoLTE signaling risk: SIP, IMS-AKA, media plane attacks.
• IMS Security Training Training on IMS, VoLTE/VoNR, SIP and RCS security.
• Diameter Attacks S6a IDR/PUR/CLR abuse, subscriber tracking, LTE signaling attacks.
• Diameter Security 4G/LTE Diameter threats across IPX/roaming and DEA defenses.

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.