vimwiki/tech/GSM.wiki

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2022-01-16 21:30:01 +00:00
= GSM =
GSM or the global system for mobile communications is a standard developed to
standardize cellphones and their communication and infrastructure.
== IMSI ==
International Mobile Subscriber Identity is a way for devices to id themselves
on a GSM network. An IMSI is a secret key that is stored on the SIM card.
=== IMSI catcher ===
A spoofed GSM tower. In GSM the base station (tower) picks all settings
including Tx power, Rx gain, encryption, etc