Purpose: This study examines how internet users' information privacy concern (IUIPC) and climate anxiety (CA) shape perceived privacy security (PPS), while investigating the mediating role of team psychological safety (TPS) and the moderating role of institutional trust (IT) in these relationships. Method: A quantitative cross-sectional survey was administered to 241 employees in Saudi Arabia. Data were analyzed using Mplus with structural equation modeling (SEM) incorporating bootstrapped mediation (5,000 resamples) and moderated regression for interaction effects. Findings: IUIPC positively predicted PPS, whereas the direct effect of CA on PPS was non-significant. TPS significantly mediated both the IUIPC-PPS and CA-PPS paths. IT negatively moderated both IUIPC-PPS and CA-PPS relationships, indicating a buffering role. The model explained 67.1% of the variance in PPS. Originality/Implications: This study is among the first to integrate climate anxiety alongside privacy-specific constructs in predicting security perceptions, theoretically extending the nexus of environmental and digital risk psychology. The findings underscore the organizational significance of psychological safety and institutional trust as boundary conditions in privacy–security behavior.