Bigger Problem
This dramatically illustrates the U.S. national-security vulnerability of the whole interweb to hostile take-down. Like so many other infrastructure constructs - e. g., the electric grid, gas & oil pipelines, etc, they have been developed with only the least expensive, most "efficient", criteria in mind, with security and reliability under duress, as an afterthought. To add such security after the fact is extremely expensive, more so than would have been case if designed into the original system. Such was the situation pointed out in the weeks following 9/11 by ex-CIA director Woolsey regarding existing infrastructure, and little or nothing has been done to remedy the problem in existing or new infrastructure since.