In this paper we examine the latest thinking, approaches and methodologies in use for finding the nuggets of information
and subliminal (and perhaps intentionally hidden) patterns and associations that are critical to identify criminal activity
and suspects to private and government security agencies. An emphasis in the paper is placed on Social Network
Analysis and Investigative Data Mining, and the use of these technologies in the counterterrorism domain. Tools and
techniques from both areas are described, along with the important tasks for which they can be used to assist with the
investigation and analysis of terrorist organizations. The process of collecting data about these organizations is also
considered along with the inherent difficulties that are involved.