But offering examples based on a simplistic universe where everything can be taken at face value is extremely useful. It's much harder analyzing something such as a... grocery store, as not everyone is familiar with their processes and things that may happen behind the scenes.
But there are systems out there that can be analyzed from a security perspective that you don't need intimate knowledge of. The latest one that's occurred to me is the highway system. Next time you're stuck in traffic take a look around.
- Sign poles
- privacy/sound walls