Back when the internet consisted of a handful of computers networked together across a few research institutions, nobody could have imagined that it would one day form the backbone of a new digital way of life. And that probably explains why none of the researchers who thought up its core technologies — things like packet switching and TCP/IP — gave much consideration to the need to secure the data passing through it.
But by 1989, hackers like Robert Morris had already spotted the security weaknesses of the fledgling global network and started to exploit them. And that was just the beginning. Today, network administrators and individual internet users spend significant amounts of time and money trying to keep their data safe from prying eyes.