Gaining access to a system that you are not supposed to have access is considered as hacking. For example: login into an email account that is not supposed to have access, gaining access to a remote computer that you are not supposed to have access, reading information that you are not supposed to able to read is considered as hacking. There are a large number of ways to hack a system.

In 1960, the first known event of hacking had taken place at MIT and at the same time, the term Hacker was organized.

Ethical hacking
Ethical hacking is also known as White hat Hacking or Penetration Testing. Ethical hacking involves an authorized attempt to gain unauthorized access to a computer system or data. Ethical hacking is used to improve the security of the systems and networks by fixing the vulnerability found while testing.

Ethical hackers improve the security posture of an organization. Ethical hackers use the same tools, tricks, and techniques that malicious hackers used, but with the permission of the authorized person. The purpose of ethical hacking is to improve the security and to defend the systems from attacks by malicious users.

Types of Hacking
We can define hacking into different categories, based on what is being hacked. These are as follows:

Network Hacking
Website Hacking
Computer Hacking
Password Hacking
Email Hacking
Network Hacking: Network hacking means gathering information about a network with the intent to harm the network system and hamper its operations using the various tools like Telnet, NS lookup, Ping, Tracert, etc.
Website hacking: Website hacking means taking unauthorized access over a web server, database and make a change in the information.
Computer hacking: Computer hacking means unauthorized access to the Computer and steals the information from PC like Computer ID and password by applying hacking methods.
Password hacking: Password hacking is the process of recovering secret passwords from data that has been already stored in the comp