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1.
Gaining access to a computer or server using any hacking methods.

Also see crackcessed... (An obsession with crack-cocaine)
"I'm hackcessing the mainframe innit"

Kittens can use it in the form of "i'm in ur server because i hackcessed my wai in lolz"

and so on.
by D-T0X June 11, 2007
 
2.
using your leet skills to bypass some system.
i just hackcessed the mainframe

kittens can use it in the form of "i'm in ur server hackcessing ur stuff"
by this is a fake account, yes June 10, 2007