The internet was designed to be amazingly robust, able to successfully get a message through a nuked-out infrastructure -- point A to point Z via any number of non-predetermined intermediate points. It was not designed to be secure because such security wasn't deemed necessary to the completion of the mission of getting a message to point Z from point A regardless the damage inbetween the two points.
What security it does have has been bolted on after-the-fact much like bolting a wind spoiler onto a Volkswagen Beetle. and with pretty much the same comical effect. "Secure" internet will require some serious redesign at the various hardware and sofware levels before it can be secure.
An interesting question is whether or not it can be both very robust and very secure at the same time?
My point being that the warnings about the above were made loud and clear in the mid-1990s when the internet was "discovered" by the citizenry and the commercial interests and yet everyone yelled "Full speed ahead!" and so here we are.