Torpedo Attack

In telecom networks, the Torpedo (TRacking via Paging mEssage DistributiOn) attack exploits paging procedures in LTE and 5G to determine whether a victim is in a given location area by triggering and observing paging messages. It can serve as a building block for further identity-disclosure attacks.

Categories: Identity and SubscriberThreats and Attacks

Torpedo Attack in context

Subscriber identifiers (IMSI, SUPI, MSISDN, IMEI) are the anchor for authentication, charging, lawful interception and fraud analytics. Any protocol or interface that leaks a permanent identifier is treated as a serious privacy defect, which is why 5G introduced SUCI concealment on the air interface.

Telecom threats range from opportunistic SMS phishing and SIM swap to nation-state grade location tracking and lawful-interception abuse. The common thread is that most attacks exploit the inherited trust model of legacy signaling. SS7 and Diameter were designed for a closed operator community that no longer exists.

To place Torpedo Attack in the wider telecom-security picture, review Paging Attacks, Piercer Attack, Traffic Baselining, Sinkhole, BTS Impersonation (Fake BTS) and Event Logging.

Related terms

Related topic hubs

  • Diameter Attacks S6a IDR/PUR/CLR abuse, subscriber tracking, LTE signaling attacks.
  • Diameter Security 4G/LTE Diameter threats across IPX/roaming and DEA defenses.
  • 5G Security 5G SBA, SEPP, SUCI, 5G-AKA, N32 and service-based interface security.
  • 5G NEF Security Network Exposure Function security in the 5G core.

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.