Civilization has proven very resilient in the face of one of its hidden SPOFs being destroyed/attacked. The same is true for two and three of those SPOFs being

Civilization has proven very resilient in the face of one of its hidden SPOFs being destroyed/attacked. The same is true for two and three of those SPOFs being damaged at the same time. I'm not convinced there wouldn't be a system degradation cliff after that point of 3+ SPOFs being attacked, e.g. a GPS issue, a massive BGP hack, Tier 3 Comm. or equivalent outage, and a DNS issue--all around the same time. That "cliff" could cause a biblical amount of damage. I'm sure those could all be mitigated, but the idea of them failing all at once, even coincidentally, is terrifying.