Top Definition
A grey hat is some one with a mixture of black and white hat experience. Usually, a grey hat is someone who performs network security or system security analysis for organizations.
BOB the grey hat will scan your webserver for vulnerabilities for x amount of $. When he gets home he will reverse engineer microsoft products using stolen windows code.
by sunka_tonka March 21, 2006

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Someone who works on the computer, especially hacking that hacks into systems not to look for anomalies or to destroy a system. They're basically in there screwing around causing minor or no damage.
Kevin Mitnick
by silver bishop February 01, 2004

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Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

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The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

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A Grey-Hat is a term given to Gandalf the grey by some stupid idiots who think that he is a computer Hacker
Gandalf the Grey-hat
by The guy who decided to die November 29, 2010

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt