A Comprehensive Guide to How IMSI Catchers Work
An IMSI Catcher is defined as phone eavesdropping device that is used for tracking the movement of cell phone users and intercepting their mobile phone traffic. It is essentially a fake base towerthat acts between the service provider’s real towers and the target cell phone which, perhaps, explains why it is commonly referred to as a Man-In-The-Middle Attack.
Today, IMSI-Catchers are used in some countries by intelligence and law enforcement agencies although their use has raised significant privacy and civil liberty concerns with calls for stricter regulations.
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