Mobile Subscriber-Identity Security

The cellular field reference — SIM and eUICC trust, sender provenance limits in SMS/MMS, covert transport channels that bypass an on-device VPN, and the DFIR playbook down to carrier records — is maintained as a module of the RAGBAZ school, together with the Android compromise-assessment forensics course and its gated lab assets.

Canonical home: ragbaz.cc/school/cellular

• School overview — all current modules
• Cellular module — this material, in full
• Forensics module — five labs, teacher's manual, and read-only acquisition tools

:::note single source The module previously had a second, reflowed copy on this page. To keep the material from drifting it now lives only under ragbaz.cc/school/; this page is the Atlas pointer to it. :::