What is a "Imsi Catchers Are Operated By Cellular Service Companies"? The Most Authoritative Explanation.
What is an international mobile subscriber identity catcher (IMSI catcher)?
An international mobile subscriber identity-catcher, or IMSI-catcher, is a telephone eavesdropping device used for intercepting mobile phone traffic and tracking location data of mobile phone users.Who uses IMSI catchers?
In the UK, the first public body to admit using IMSI catchers was the Scottish Prison Service, though it is likely that the Metropolitan Police Service has been using IMSI catchers since 2011 or before. Body-worn IMSI-catchers that target nearby mobile phones are being advertised to law enforcement agencies in the US.Does the Mobile IMSI catcher change over time?
After turning on the mobile IMSI Catcher, we observed that the phone entered a short transition period during which the reported throughput changed rapidly over time. In all cases, however, the phone was eventually delivering the IMSI: we spotted no statistical differences in the 4G-Only and 5G cases.What is an active IMSI catcher?
Active IMSI-catchers generally also intercept all conversations and data traffic within a large range and are therefore also called rogue cell towers.
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