A slang term for the phrase "uber hacker", uber meaning supreme or superior to another person, idea, or thing.
Some who who hacks a program, game, ect. to the point where it amazes another player enough to comment about it.
Non-hacker sees a hacker doing crazy stuff and types into the chat box:
"PMG dat guyz an Ub3r H4x0r man!!!!!"
Being the most elite AOL hacker, one who is able to get around the very strategic and difficult AOL policies.
Basik is an ub3r h4x0r