In this innovative practice full paper, we investigate the benefits of using an augmented reality (AR) application in wireless network security education. For this purpose, we design and implement an AR application which passively captures wireless network traffic and superimposes the otherwise imperceptible network packets on the camera image of sending and receiving devices. We perform a user-study with 25 participants, who are provided with a laptop which runs our application. Students are tasked to spot Evil Twin, Address-Resolution Protocol (ARP) Poisoning and Denial of Service (DoS) attacks launched on a 802.11 Wi-Fi network by observing it with the AR application. We find that students were able to spot and describe those attacks intuitively. From those results we conclude that an AR-based approach is a valuable addition to wireless network security laboratory courses. Additionally, our results indicate, that our application provides access to this complex topic even for users without a technical background. To the best of our knowledge, this is the first experimental study, which shows the beneficial effects of using AR in wireless network security education.