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As a person of pink colour I am not offended by your cracker reference, but some white folks might be. Setting that aside, yes, that old cracker Gates is a huge fan of back doors!

Sorry, not the same word. Hacker vs Kracker.

Hacker is someone who takes apart things to make them do what they didn't when they can from the factory. Kracker is some who kracks into, breaks into other people's computers.

and i don't know what to do, since many people do not know the difference (because of movies)

It was a joke and a reference to a slave master ;)