The purpose of this study is to adapt and pilot a sexual assault prevention intervention for transgender and nonbinary (trans) undergraduate students. Forty percent of trans individuals (i.e., individuals whose gender identity does not align with their sex assigned at birth, inclusive of nonbinary people) are sexually assaulted during their time in college. Despite the magnitude of this issue, there are no sexual assault prevention interventions that have lowered victimization of trans students. The Enhanced Assess, Acknowledge, Act (EAAA) intervention is recommended by the Centers for Disease Control and Prevention (CDC) and is the only intervention proven to lower rape victimization by over 50% among cisgender female undergraduates. However, trans-specific vulnerabilities to violence are not addressed in EAAA, nor in the online adaptation of EAAA recently piloted by the study team called internet-delivered EAAA (IDEA3). This project will adapt and pilot IDEA3 for trans and nonbinary students to develop one of the first evidence-based sexual assault prevention interventions for trans and nonbinary young adults. We will adapt IDEA3 for trans students ages 18-25 and test it in an initial group which we will use to make revisions to the program. Then, we will collect participant survey and focus group data on feasibility and acceptability from 4 more groups of participants, revising the intervention between groups. Finally, we will collect preliminary data on whether the program increased participants' confidence in their ability to defend themselves.