Krishan Kumar et al, International Journal of Computer Science and Mobile Computing, Vol.4 Issue.5, May- 2015, pg. 527-533 © 2015, IJCSMC All Rights Reserved 527 Available Online at www.ijcsmc.com International Journal of Computer Science and Mobile Computing A Monthly Journal of Computer Science and Information Technology ISSN 2320–088X IJCSMC, Vol. 4, Issue. 5, May 2015, pg.527 – 533 RESEARCH ARTICLE Vulnerability Detection of International Mobile Equipment Identity Number of Smartphone and Automated Reporting of Changed IMEI Number Krishan Kumar 1 Prabhpreet Kaur 2 Department of Comp. Sci&Engg. Department of Comp. Sci&Engg. GNDU, Amritsar, Punjab, INDIA GNDU, Amritsar, Punjab, INDIA Er.krishankumar4014@gmail.com Prabhsince1985@yahoo.co.in Abstract: With the advancement’s in the mobile technology and continue reduction in the cost of mobile hardware mobile devices had reached in hand of around 80 % of people on the world. The Unique international mobile equipment identity (IMEI) number uniquely identifies each mobile in world. As IMEI number was designed to uniquely identify an individual mobile device, hackers have designed various methods to change the IMEI number of mobile devices so that lost or stolen mobile devices doesn’t located by the securities agencies, causing the IMEI scams which had brought loss of data and property. Various hardware flashers devices and software tools are invented designed by the hackers which are easily available on internet. Thus it is important to stop and prevent such theft. To prevent such attacks some methods are presented in this paper. This paper presents brief about the IMEI number and structure of GSM networks. This paper also list out the various methods of changing the IMEI number, software tools are used for changing the IMEI number of various mobile brands. At the last some methods are proposed which if implemented will help in prevention of Change of IMEI and locating the lost or stolen devices across a country. Keywords: GSM, IMEI, IMSI, Smartphone