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Seminar Report

A. Seminar Report. on. Mobile Cloning. Presented by Intramantra Global Solution PVT LTD, Indore http://intramantra.com. CONTENTS. ESN(Electronic Serial Number) MIN(Mobile Identification Number) AMPS / NAMPS GSM CDMA Cloning Methods to detect cloned phones Conclusion.

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Seminar Report

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  1. A Seminar Report on Mobile Cloning Presented by Intramantra Global Solution PVT LTD, Indore http://intramantra.com

  2. CONTENTS • ESN(Electronic Serial Number) • MIN(Mobile Identification Number) • AMPS / NAMPS • GSM • CDMA • Cloning • Methods to detect cloned phones • Conclusion

  3. What is ESN?The ESN (Electronic Serial Number) is the serial number of your cellular telephone.The ESN is transmitted to the cell site and used in conjunction with the NAM to verify that you are a legitimate user of the cellular system.What is MIN?The MIN (Mobile Identification Number) is simply the phone number of the cellular telephone.

  4. AMPSAMPS (Advanced Mobile Phone Service) was the first cellular mobile system in the United States. AMPS operate as an analog system using 30 kHz wide channels.NAMPSAMPS was later enhanced to NAMPS (Narrowband Advanced Mobile Phone Service), a version of AMPS that uses 10 kHz channels and by doing so triples cellular capacity.

  5. What is GSM(Global System for mobile communication)? GSM (Global System for Mobile communication) is a digital mobile telephone system that is widely used in Europe and other parts of the world. GSM uses a variation of Time Division Multiple Access (TDMA) and is the most widely used of the three digital wireless telephone technologies (TDMA, GSM, and CDMA). GSM digitizes and compresses data, then sends it down a channel with two other streams of user data, each in its own time slot. It operates at either the 900 MHz or 1,800 MHz frequency band.

  6. How CDMA Works?IS-95 is a standard for CDMA (Code Division Multiple Access) Digital Cellular.In a CDMA system, your encoded voice is digitized and divided into packets. These packets are tagged with "codes." The packets then mix with all of the other packets of traffic in the local CDMA network as they are routed towards their destination. The receiving system only accepts the packets with the codes destined for it.

  7. What is cell phone cloning Each phone has an Electronic Serial Number (ESN), identifying the phone, as well as a Mobile Identification Number (MIN), which includes the telephone number of the phone. As the acronyms indicate, these are used to identify the subscriber. When placing a call, the phone transmits both the ESN and the MIN to the network. These were, however, sent in the clear, so anyone with a suitable scanner could receive them. The eavesdropped codes would then be programmed into another phone, effectively cloning the original subscription. Any calls made on this cloned phone would be charged on the original customer.

  8. Figure 1. Cellular cloning.

  9. Methods to detect cloned phones on the networkDuplicate detection. The network sees the same phone in several places at the same time. Reactions include shutting them all off so that the real customer will contact the operator because he lost the service he is paying for, or tearing down connections so that the clone users will switch to another clone but the real user will contact the operator. Velocity trap. The mobile phone seems to be moving at impossible, or most unlikely speeds. For example, if a call is first made in Helsinki, and five minutes later, another call is made but this time in Tampere, there must be two phones with the same identity onthe network.PIN codes. Prior to placing a call, the caller unlocks the phone by entering a PIN code and then calls as usual. After the call has been completed, the user locks the phone by entering the PIN code again. Operators may share PIN information to enable safer roaming.

  10. Conclusion. Some of the forms of fraud presented here have been possible because of design flaws. The cloning of analog mobile phones was possible because there was no protection to the identification information and the cloning of GSM SIM-cards is possible because of a leaking authentication algorithm. These problems can be countered with technical means. However, fraud in itself is a social problem. As such, it may be temporarily countered with technological means but they rarely work permanently. Mobile phones are a relatively new phenomenon and social norms to its use have not been formed. Some operators have tried the ``If you can't beat them, join them'' approach and provided services that would otherwise be attained by fraud. As mobile communication matures, both socially and technologically, fraud will settle to some level. Until then, it is a race between the operators, equipment manufacturers and the fraudsters.

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