Ethical hacking:What it is?

Ethical hacking also known as "white hat" in computing.It is basically a slang which is basically used for security professionals in computing.Ethical hacking as the name suggests is done for good purposes ,for mantaining security etc.
Security is main issue in today's industrial arena.People are interested now more and more in this field and going for it.Parents are opting it as career for their kids.Learning hacking is not a wrong thing but using it for wrong things is a bad.
When we learn hacking we could stop those people who attack other system using some code.Ethical hacking protects others from these harmful things.
Using hacking for wrong purposes is a wrong thing and it could lead them in a very big trouble.Hacking is punishable under law ,if it is done for wrong purposes.