This app was marked as copy protected in the developer console. It was intended to demonstrate that malware scanners are not able to read its files and they could not detect the Anti-Malware Testfile included in the APK as assets/eicar.com. Later Google deprecated the copy protection feature for free apps (and made it compulsory for paid apps), which means that this app is now completely readable, and malware scanners should detect the included testfile.
This app is heavily based on the ADT FullscreenActivity sample. Actually I haven't change anything but the title.
PS: I had to create a high-res icon, these are the credits:
The Android robot is reproduced or modified from work created and shared by Google and used according to terms described in the Creative Commons 3.0 Attribution License. Source: http://commons.wikimedia.org/wiki/File:Android_robot.svg
The padlock icon is from the Open Clip Art Library, which released it explicitly into the public domain, using the Creative Commons CC0 1.0 Universal Public Domain Dedication. Source: http://commons.wikimedia.org/wiki/File:Padlock-blue.svg