Upshot: if you control all of DNS, you can control all of the internet. ... To protect DNS, ICANN came up with a way of securing it without entrusting too much control to any one person. It selected seven people as key holders and gave each one an actual key to internet.Oct 21, 2016
Are there keys to the internet?
That master key is really some computer code known as a root key-signing key. It is a password of sorts that can access the master ICANN database. This key generates more keys that trickle down to protect various bits and pieces of the internet, in various places, used by different internet security organisations.