That is a timeline of the principal achievements related to Hacking

 
-1950’s... The term hacking is defines as an action to improve performance.

 -1960’s... The first documented reference to hackers in the MIT Student Magazine.

 -1970’s... The notion of “phreaking” (phone hacking) is rising. Its main goal was to access the
                   AT&T system to make long distance phone calls free.

-1980’s... A group of hackers called the Legion of Doom emerge in the United Sates, giving
                 more power to the hackers in the whole country.

-1990’s... Computer hacking is now a major problem for the Internet users. Security Software
                   gains popularity.

 -2000’s... Many hackers such as Michael Calce (MafiaBoy) became internationally known for
                    their Cyber crimes.