Abdelnabi is a Principal Investigator at the ELLIS Institute Tübingen and an Independent Research Group Leader at the Max Planck Institute for Intelligent Systems. She leads the COMPASS research group (COoperative Machine intelligence for People-Aligned Safe Systems). Her research focuses on AI security, safety, and alignment, with particular expertise in multi-agent systems, prompt injection attacks, privacy frameworks, and evaluation robustness. Prior to her current role, she worked at the Microsoft Security Response Center on AI security vulnerabilities and red-teaming. Sahar's contributions include pioneering work on indirect prompt injection in LLM-integrated applications, which has been widely adopted by NIST, MITRE, OWASP, and Microsoft. She holds a PhD from CISPA Helmholtz Center for Information Security and Saarland university.