White-Hat

White-Hat hackers are hackers who either work for the government or within the law for good purposes.

Other similar groups include:
 * Grey-Hat
 * Black-Hat

The White-Hat hackers are the exact opposite of Black-Hat hackers in terms of obeying the law and reasons. White-Hat hackers may directly oppose Black-Hat. They may also oppose Grey-Hat hackers but since they are both out for the betterment of the people they don't usually do unless the Grey-Hat is causing more problems than they are fixing.