Engadget on the FBI hunting for suspects in California internet backbone cable-severing attack (emphasis added):

The severed cables belonged to backbone-internet companies Level 3 and Zayo. In order to access these cables, the vandals had to remove manholes and enter underground vaults. While the cut lines were fixed within a day, it does highlight how easy it is to disrupt the internet within the physical world. In a statement, the FBI asked for the public to contact it if anyone saw anything suspicious at one of the sites and added that, “the individuals may appear to be normal telecommunications maintenance workers or possess tools consistent with that job role.”

So instead of the internet being brought down by a virus or super hackers, it turns out that someone with a set of bolt cutters could severely disrupt how we get our news and do business.

I could not have said it any better. Malware is not required to disrupt our precious internets.