Information Reconnaissance by Accumulating Public Information Data Sources

In the Internet age, the most valuable pieces of data when investigating an individual are phone numbers, email addresses, and usernames. These data points, which are typically freely shared by their owners, can act as a pri-mary key to link research on a person to other data sources dispersed throughout the web. The Internet has made obtaining a wealth of data an accessible activity requiring only creativity and persistence. An investiga-tor with the motivation to identify information on a certain person or or-ganization can use these data points to build links and present useful in-formation on a target. Our paper aims to study connecting disparate data from publicly accessible sources to provide detail into someone or some-thing is called Open Source Intelligence (OSINT). In this paper, we intro-duce the subject of OSINT both in a broad sense as well as through docu-menting hands-on experience in scraping information on one of the mem-bers of this research group as well as generic internet targets. The first fo-cus is on presenting the overall concept including norms and techniques that may be used to investigate an individual. The second focus is on deep-diving a specific tool along with a method for adding data sources to present the broad scope of available information. Several useful tools that are common in the OSINT space are presented. Finally, we found the chal-lenge in narrowing the focus to the intended target and in relating it to use-ful information.