The study on Informal Social Protection (ISP) in Yemen provides a comprehensive analysis of how informal networks function as vital safety nets during crises. These networks—comprised of family, friends, and community members—offer crucial assistance, from food and cash to emotional support, significantly impacting household resilience and economic stability. Key findings reveal that ISP networks are indispensable, often more accessible and reliable than formal aid in regions experiencing protracted conflict. The study identifies six dimensions of ISP, including network size, resources, and diversity, which collectively influence household welfare. Higher ISP scores correlate with improved food security and greater resilience against economic shocks, as measured by the Food Consumption Score (FCS). Despite the critical role of ISP, the study highlights vulnerabilities within these networks. Exclusion due to socioeconomic or geographic barriers can lead to increased household fragility. Moreover, the dynamics within these networks can change, potentially eroding over time as resources become scarce. The research underscores the importance of incorporating ISP measurements into humanitarian assessments. By understanding the strengths and limitations of these networks, aid organizations can better anticipate needs, tailor responses, and enhance the effectiveness of interventions. This approach not only aids in immediate crisis response but also supports long-term resilience by leveraging and reinforcing existing social structures. In conclusion, the study advocates for a refined focus on informal social networks, suggesting that their integration into formal assistance frameworks could enhance overall humanitarian efforts, providing a more nuanced understanding of community needs and capacities in crisis settings.