James Comey:

In 2003 there were 6.3 billion human beings on the earth and 500 million devices connected to the Internet. In 2010 there were 6.8 billion people on the earth and 12.5 billion devices connected to the Internet.

Steven Levy:

The Internet is a vast lawn with billions of mole-holes.

James Comey:

The Internet is the most dangerous parking lot imaginable.

Mark Foulon:

It has become clear that Internet access in itself is a vulnerability that we cannot mitigate. We have tried incremental steps and they have proven insufficient.