Investigators believe that Indian Mujahideen is one of many groups composed of lower inter SIMI members. According to the security agencies, SIMI took new titles because the top leadership of SIMI have been detained and would be available for interrogation. The change in names is believed to signal a change in tactics as SIMI affiliate militants attempts to garner more support from Indias Muslim community rather than be seen as a group consisting of foreigners. The biggest and boldest attack to date by the group was the 2008 Ahmedabad serial blasts, where it gained national notoriety with a casualty count towards 50. I have discussed the fact and profile of Indian Mujaheedin and SIMI under the above background. I have used extensively available online report on the background of global Jehad and Sunni Militancy. Somewhere I have re-write many topics according to the home grown terrorism in India. This book is an attempt to figure out the hidden and unexplored part of the Indian Mujaheedin and SIMI.