The notion of a hacker in nowadays is operated by the mass-media only when a person brakes security standards or steals information by using a regular PC. However there are person with similar abilities but who work for Government agencies. There have been some several incidents in the past years when hackers that were caught practicing illegal activities were given top-paid jobs in the same companies or institutes that were its victims not long ago.
Hackers were present there were access to information was forbidden, like in the communist China or Republic of Moldova (Europe). These people could get to the truth by their means, and spread the word to the oppressed masses.
Some companies even pay them to attack their systems just to understand and identify what security problems they might face.
But in the recent years the hackers world has transformed in an informational world and wars. Just let us remember the Georgia-Russia conflict.
So after all these arguments how would you still qualify this sort of activity?