Archives for GSM

International Mobile Subscriber Identity (IMSI) Catchers

International Mobile Subscriber Identity (IMSI) catchers are basically spoofed cell towers. There are many different types of IMSI catchers, everything from a home built $1000 unit to a professional grade one which can cost substantially more. The NSA has their own “version” of a GSM IMSI catcher which is called CANDYGRAM. I talked about CANDYGRAM in my article NSA’s Version of a GSM IMSI Catcher CANDYGRAM.   International Mobile Subscriber Identity (IMSI) Catchers As I said above IMSI catchers are basically spoofed cell towers. These spoofed cell towers simply go between you and your handset and the service provider’s real
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Categories: Information Technology, IT Security, and Preston Hood.

NSA’s Version of a GSM IMSI Catcher CANDYGRAM

This is one of the most non-surprising NSA documents I have seen. This device is named CANDYGRAM and its purpose is to act as an IMSI catcher for GSM cellular networks.   What It Is CANDYGRAM is a device that mimics a GSM cell tower of a target network. This is basically the same thing as an IMSI catcher but with a few extra bells and whistles. One of the extra features is that it sends out an SMS though the external network to registered watch phones when a target handset enters the base station’s area of influence. CANDYGRAM is
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Categories: Information Technology, IT Security, and Preston Hood.