1- A Hacker (Or rather cracker, but that's a different discussion) who uses his abilities for malicious purposes.

2- Anything relating to malicious use of the internet.
1- as a hacker, I would have to say he's definately a black hat hacker.

2- since the software's ony use was generating registration keys for legitamite software, it was considered balck hat software.
by Mr.Mysteriosity September 07, 2003
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The black hat hackers are the ones that cause damage. White hat hackers do good with their hacking
by Don September 11, 2003
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used in the SEO (Seach Engine Optimisation) industry as a way of describing players which in order to reach the goal of high rankings, participate in activities NOT liked by the Search Engines.
The only way to get high rankings in your industry is to employ a Black Hat SEO.
by Shak June 23, 2004
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Word up G, I just got m new copy of Black Hat to run on my ghetto 386, yo'.
by Shrike September 04, 2003
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A villian, a bad-guy, the guy who wears the black hat fighting the hero- not to be confused with that guy from RUN-DMC !
Man, Tyson was definitely the BLACK HAT in that fight !
by Rob Postuma September 14, 2003
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