English
    Frank V
    Occupation:SMS Broadcaster LV.1
    Introduction:4G based IMSI catchers such as the Hailstorm are becoming more popular with governments and law enforcement around the world, as well as spies, and even criminals. Until now IMSI catcher detection has focused on 2G IMSI catchers such as the Stingray which are quickly falling out of favor.
    4G based IMSI catchers such as the Hailstorm are becoming more popular
    2021-07-30 23:04:37 Author:Frank PV(1354)

    4G based IMSI catchers such as the Hailstorm are becoming more popular with governments and law enforcement around the world, as well as spies, and even criminals. Until now IMSI catcher detection has focused on 2G IMSI catchers such as the Stingray which are quickly falling out of favor.

    In this talk we will tell you how 4G IMSI Catchers might work to the best of our knowledge, and what they can and can't do. We demonstrate a brand new software project to detect fake 4G base stations, with open source software and relatively cheap hardware. And finally we will present a comprehensive plan to dramatically limit the capabilities of IMSI catchers (with the long term goal of making them useless once and for all).

    In this video im processes of easy step by step building a passive IMSI catcher. The purpose of this video is to be educational - to highlight the ease of which these devices can be built, and to practically show how privacy is already being compromised today ! easy step by step install and running under virtual machine Ubuntu 18.04 and cheap SDR dongle! .

    An IMSI catcher is a device commonly used by law enforcement and intelligence agencies around the world to track mobile phones. They are designed to collect and log IMSI numbers, which are unique identifiers assigned to mobile phone subscriptions. Under certain circumstances, IMSI numbers can be linked back to personal identities, which inherently raises a number of privacy concerns.

    This video walks through the processes of building a passive IMSI catcher, which is distinctly different from traditional IMSI catchers in that it does not transmit nor does it interfere with cellular networks in any way.

    Traditional IMSI catchers are illegal in most jurisdictions due to the fact that they transmit on cellular frequencies (which requires a license), and that they essentially perform a man-in-the-middle attack between a phone and mobile base station (which breaks all sorts of anti-hacking laws). A passive IMSI catcher does neither of these.
    Due to the nature of LTE base stations, the capture of IMSI numbers seems impossible. LTE stations use GUTI to communicate with users instead of IMSI. The GUTI contains the temporary IMSI number called T-IMSI. This allows the operator to find out who is at the corresponding LTE station who is authorized to query T-IMSI information.

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