This document provides an overview of hacking, including its history, definitions, types, famous hackers, reasons for hacking, and advice on data security. Hacking originated at MIT in the 1960s and refers to attempting unauthorized access to computer systems. Types of hacking include website, network, email, and password hacking. Famous hackers from history are also listed. The document concludes with recommendations for securing data such as using unique passwords and being cautious of phishing attempts.