The Internet’s biggest vulnerability is not spammers, or hackers or viruses. But it is exactly the same vulnerability as it was more than 20 years go: Cables. See Cable damage in Mediterranean disrupts Internet in Mideast.
The Internet Protocol (IP) is robust, and self-healing as long as it can find the appropriate (alternate) paths or routes. The Internet’s biggest vulnerability is having limited number of paths or routes, especially critical ones. Add more paths, wired or wireless.
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