During the Second Intifada the security situation in the Palestinian territories deteriorated drastically and the Palestinian security forces were in a state of collapse. In response to this situation a large-scale security sector reform (SSR) support initiative, led primarily by the United States, was implemented. As a result, the security situation improved but many Palestinians perceived that the SSR had further intensified the authoritarian tendencies of the Palestinian Authority (PA) and worsened the human rights situation. Why did the SSR efforts in Palestine fail? This chapter critically examines the SSR efforts in Palestine from the perspective of securitization. It focuses on how the three main actors, Fatah, the US, and Israel, excessively securitized the SSR as a means to counter their own perceived threats. As a result, the most crucial aspects of SSR, such as democratic procedures and the strengthening of civilian oversight, were disregarded. Instead, for many Palestinians, the PA and Palestinian Authority Security Forces were seen as sub-contractors of the occupier and thus untrustworthy. Although a “reactivated PA” is expected to take charge of governing Gaza following the Gaza war it is extremely difficult to place expectations on the PA that has lost public trust.