This chapter examines the concepts of ‘vulnerability’ and ‘resilience’, noting that most research focuses only on an individualised understanding of these terms. What can be known from empirical research is reviewed through the lens of intersectional theory, which accentuates the need for a whole-system approach to afford children greater protection. Just as online child sexual victimisation (OCSV) is not homogenous, neither are children. Their age, gender, race, sexualities, migration status, and class intersect and change over time. Vulnerability and resilience can be time and identity specific. They can also be fluid; a prior victimisation does not necessarily result in vulnerability, and resilience to one form of OCSV may not provide resilience to another. From a child's perspective, OCSV experience holds similarities and important differences in terms of perpetration and consequences, requiring tailored intersectional responses at the appropriate level.