DEF CON 34 · T-Mobile Cybersecurity
DEF CON 34  ·  Telecom Village  ·  T-Mobile

Break Real
Telecom Networks

Learn how cellular networks actually work — then attack them. A hands-on workshop covering SS7, 4G, and 5G security, with a live CTF where you hack a real Open5GS core.

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Workshop
Learn First
Start with the fundamentals — IMSI, SS7, authentication, subscriber data. Interactive labs and scenarios, no prior telecom experience required.
SS7 4G / 5G SIM & IMSI Auth flows
Start the workshop →
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CTF  ·  5 Challenges  ·  900 pts
Jump In
Get a dedicated Open5GS 5G SA core over WireGuard. Enumerate NFs, steal subscriber credentials, exploit real attack paths. Find the flags.
NRF Enumeration UDR Credential Theft WireGuard VPN
Register & get your core →