The chapter deals with Hamas’s human intelligence (HUMINT) activity. Hamas, of course, makes use of the most traditional method of intelligence gathering – information from human sources. This chapter details how Hamas first recruited local sources for short periods and specific missions. Gradually, sources were recruited who could operate outside of Israel; these sources were sent on longer-term and more advanced missions. Hamas also used the internet, i.e., social media and email, to contact and handle potential sources. This chapter also describes how Hamas turned collaborators with Israel into double agents and ran operations using these agents.