OS Patched Up Indicator Light

The recent ransomware attack has got me thinking whether a system is up to date and patched should have a notification icon similar to how cars have notification lights for when the engine is losing too much oil. It could be color coded, green means patched up, orange means the patches are pending as the OS is a version receiving patches, red means the OS isn't receiving patches and will remain vulnerable. It could be a taskbar icon and provide the user with more information when clicked.

As computers and networks become an increasingly important part of our lives it's important to bring some of the old design conventions (like indicator lights) to these new mission critical systems.