Being in IT, I like to know as much as I can about the systems I use every day to better understand the type of vulnerabilities and threats common to those systems. I have the Airport Express (A1392) as my Wi-Fi & router in the house and was looking to see if it was up-to-date on software (it was, running 7.6.4) and wondered what type of OS is running on there? I found this page doing a quick Google search, but it tells nothing of the inner workings of the device. Seems like there hasn't been any software updates in quite a while. The last release was in 2013. Anyone know the OS? My guess is some flavor of Unix but was hoping someone more knowledgable on the forum would know. Thanks.