Bridge builders are not expected to make the bridge itself defend against saboteurs, unlike software. To painfully extend the scenario: the wind is relatively w

Bridge builders are not expected to make the bridge itself defend against saboteurs, unlike software. To painfully extend the scenario: the wind is relatively well understood and once you've learned a lesson and guarded against it as a bridge builder, a given bridge can be considered stable. Not so with software. One vuln fix, 5 more show up to take its place over time. Malicious actors & botnets = the wind now (bear with me please). Once the bridge no longer collapsed via a certain Just Right tune, the wind would stop blowing the old Just Right way and instead try finding a new Just Right way, like whirling in a tight circular motion in just the right spot to see if it can unscrew bolts, or attempt -ddos- to tornado itself into a waterspout to try to collapose the bridge. Security is not a one and done operation.