Paranoid Android 7.3.1 was released on the last day of October 2017, and it appears to be the final release for the series, the last to be based on Google’s Android 7 “Nougat” mobile operating system. Therefore, it introduces a bunch of important improvements, especially to the Paranoid Camera, but also patches security issues. First and foremost, Paranoid Android 7.3.1 addresses that dangerous KRACK (Key Reinstallation Attack) security vulnerability affecting virtually all devices that connect to the Internet using the WPA2 protocol. This patch alone should be the main reason to update to Paranoid Android 7.3.1 if you’re using it on your Android device.