In the era of fast changing technology and globalization nowadays, terrorists tend to use high tech, communication and information engaging in terror activities more easily. To prevent the continuous terror attacks, it is crucial to expose how terrorists utilize technology to carry out terror activities and hence, to counteract those activities. This paper attempts to discuss from the point of view of terrorists that how terrorists use technology to pass on messages and hide weapon to process terror attacks after 911 event and hope to draw some commonalities on terror activities.