Hacking:

A commonly used hacking definition is the act of compromising digital devices and networks through unauthorized access to an account or computer system. One the other hand we can say simply hacking is accessing a system in an unwanted way. Hacking is not always a malicious act, but it is most commonly associated with illegal activity and data theft by cyber criminals. 

Hacking can be good or bad. Good hacking helps your business by protecting your data from hackers. Bad hacking exploits holes to steal your data. So we should know something about hacking to protect our data from bad hackers. Good hacking is called “Ethical Hacking” and bad hacking is called “Black Hat Hacking”