Nexus devices could be about to get a boot-time device security warning system
The device security warnings will fall in three color-coded categories. The mildest of the warnings will come in a yellow tone and informs the user that the device has loaded a different operating system. One step above the danger scale, an orange warning will pop up when the OS cannot check the device software for corruption. The last of the three warnings comes in a red flavor, warning the user that the device is corrupt, cannot be trusted, and may not work properly. Sounds scary, don't you think?
The Google support page mentions that all of the three warning types can be dismissed, although Google wants you to make sure that you've knowingly altered the way the device and OS work. If you did not tinker with the operating system yourself, Google's suggestion is to flash a fresh Android image. OS tinkerers might be forced to jump through a couple of hoops once the feature rolls out in a future software update. However, the upside is that potential hack victims might soon get a friendly heads-up that their device is at risk, or at least that Google detected dubious security mechanisms.
At the moment, not many details are known about the upcoming boot-time device security warning system. With Android M right around the corner, it wouldn't be entirely unthinkable for the new feature to be a part of the impending major Android update. We'll keep our eyes peeled and let you know as soon as more information surfaces.