This netnographic study investigates how and why people engage with citizen science initiatives and share insights from them in the context of the COVID-19 pandemic. Specifically, this research focuses on biohacking, a form of citizen science in which individuals conduct innovative but controversial self-experiments. In a context of ideological, behavioral, and emotional tensions, biohackers seek to do what they consider to be “the right thing” for themselves and others. Some biohackers believed that governmental “solutions” for the pandemic were not “correct or the best” and shared scientifically unproven protocols to develop, for example, homemade vaccines. However, in many cases, biohackers may unintentionally create harm while intending to do good by sharing such “solutions.” In this vein, this research shows that sharing is not always caring, as biohacking COVID-19 exemplifies. Although sharing is a form of prosocial behavior, it has different motivations that may invert its epistemic prosocial orientation to an antisocial one. The consequence of this orientation is new challenges, as well as strengthening old challenges, for policymakers in facing public crises, such as pandemics. The prescriptions for policymakers offered in this paper aim to help reduce such an impact on governmental efforts to tackle such collective crises.