classification of hackers as per their work

We can divide hackers in mainly e parts that is .....

1. White Hat Hackers
2. Grey Hat Hackers
3. Black Hat hackers

Apart from these three an special name is also their i.e.
* Blue Hat hackers

white hate hackers are those hackers who has total authorization to hack in a system/network/server they helps in finding the loop holes in the security of a system/network/server.They are generally called ethical hackers or penetration testers.They are good guys.They have good ethics.

Black hat hackers are those hackers who doesn't have any authorization to hack but they do it.They are also called crackers.they make changes in the look and also in the databases of web sites as well as some time they delete it for fun only.They are called bad guys.They don't have any ethics.

Gery hat hackers comes in between white and black they also not have authorization to by pass the security mechanism of a system/server/network but they do it.Good thing is that they also doesn't make any kind of changes in the database even though they help to secure the system.They are independent testers.

Blue hack is nothing different.Microsoft given a name to their own hackers who helps to secure the network of Microsoft.They are also smiler to Grey hat hackers.