Ethical hacking did not come about with the invention of computers. In fact, the practice of using an individual's skills to determine how an adversary might attack has been around for more than 1,500 years.
The ancestors of Ethical Hacking come from ancient India, when they started playing a strategy game known as chaturanga, an early version of the game of chess we know today. This later evolved into real chess. Thus we have entire strategies for dealing with the “enemy” from early chess to today’s technological strategies for protecting operating systems, networks and businesses.
Of course, for a long time, no one called it ethical hacking, but that's exactly what it is: individuals or groups assess their ability to counter an attack, trying to think like their adversary. In other words, they hack for their own good.
Today, Ethical Hacking is a sought-after service for businesses that want to know if their security is vulnerable. Trustwave , one of the pioneers in modern ethical hacking with penetration testing services, offers the following
Infographic that presents the History of Ethical Hacking.
View the Infographic or download the high-resolution PDF. (Click to enlarge)

