This paper proposes a model that extends the Protection Motivation Theory to validate the relationships among peer behavior, cue to action, and employees’ action experience of cyber security, threat perception, response perception, and employee’s cyber security behavior. The findings of the study suggest that the influence from peer behavior and employees action experience of cyber security is an important factor for improving cyber security behavior in organizations. Peer behavior positively affects cue to action, which positively impacts employees’ action experience. Employees’ action experience then would have positive impacts on their threat perception and response perception. As a result, employees’ threat perception and response perception are positively related to their cyber security behavior. This process is a chain reaction.