Purpose Because of an increase in consumer awareness and the ease of information dissemination on the Internet, brands have increasingly become the target of online criticism. Several factors affect consumers’ reactions to public criticism against brands that they support. The present study investigated the interactive effects of psychological ownership, agency–communion orientation, and internal attribution on self-threat in the context of such criticism. Design/methodology/approach Three studies were conducted to test several research hypotheses. The psychological ownership, agency–communion orientation, and internal attribution of the participants in this study were manipulated using an experimental scenario. Subsequently, they completed a questionnaire with items used to assess purchase intention, self-threat, and demographic variables and for performing manipulation checks. Findings When a brand is criticized, (1) consumers with high psychological ownership of the brand are likely to buy more of that brand’s products, (2) communion-oriented consumers with high psychological ownership of the brand experience greater self-threat relative to those with low psychological ownership, and (3) agency-oriented consumers experience a consistent level of self-threat regardless of their level of psychological ownership. Research limitations/implications Brands should endeavor to enhance consumers’ psychological ownership of the brand to increase their support in times of crisis. Originality/value This study investigated how psychological ownership of a brand among consumers affected their reactions when a brand was criticized. The effect of self-threat as a mediating mechanism was also considered. Furthermore, agency and communion orientation were proposed as crucial moderators that should be considered in research on consumer–brand relationships.