Great Security Example

Imagine building a bridge and after-the-fact trying to make it "robust and reliable?"
Obviously it needs to be engineered that way from the beginning! Duhhh :)

Security needs to be planned built into everything from the start, including software - and security simply means "robust and reliable."

The Bobster at BlogofBob gives a great example here:

Consider an office building or school as opposed to a purpose built maximum security prison. Sure we could add security features into any structure, but to make that office building as secure as a purpose built prison would be enormously expensive and error prone. And most likely would never be as secure as the prison.