Hackers are people who study, analyze, and then if desired, can create, modify, or even exploit the system contained in a device such as computer software and computer hardware such as computer programs, administrative and other matters, particularly security.
Here are some 14 Hacker's World profile for now:

1. Kevin Mitnick
Kevin is the first hacker whose face was plastered in
poster "FBI Most Wanted".
Kevin is also a "Master of Deception" and has written a book entitled "The Art of Deception".
This book describes various social engineering techniques to gain access into the system.
2. Linus Torvalds
A real hacker, develop the Linux operating system which is a combination of "MINIX Linus".
Linux operating system has become the operating system "standard" hackers.
With Richard Stallman with the GNU-Linux to build its initial version and collaborate with programmers, and hackers around the world developper to develop the Linux kernel.

3. John Draper
Herz 2600 Inventor of the single tone using a plastic whistle which was a gift from a cereal box.
Is the pioneer of the use of 2600 Hz tone and known as the Phone Phreaker (Phreaker, see: frieker)
2600 Hz tone is used as a tool to make free phone calls.
In its development, the tone of 2600 Hz is no longer made with plastic whistles, but uses a tool called "Blue Box".

4. Mark Abene
As one of his "Master of Deception" Phiber optics, inspiring thousands of teenagers to learn the phone's internal system state. Optical Phiber also been named as one of 100 people a genius by New York Magazine.
Using Apple computers, Timex Sinclair and Commodore 64.
His first computer was a Radio Shack TRS-80 (trash-80).

5. Robert Morris
A child of scientists National Computer Security Center, which is part of the National Security Agencies (NSA).
The first time writing so momental Internet Worm in 1988.
Meng-infected thousands of computers connected in a network.

6. Richard Stallman
One of his "Old School Hackers", working at MIT's Artificial Intelligence lab.
Feeling disturbed by commercial software and personal and copyrights.
Eventually founded the GNU (read: guhNew) which is an acronym for GNU NOT UNIX.
Using the very first computer in 1969 at the IBM New York Scintific Center at the age of 16 years.

7. Kevin Poulsen
Commit fraud against the digital radio station KIIS-FM, ensuring that it is a caller to 102 and won the Porsche 944 S2.

8. Ian Murphy
Ian Muphy with three of his colleagues, hacking into the computer and compose AT & T setting its internal clock.
This resulted in the public telephone users get a discount "midnight" at the time of the afternoon, and who have waited until midnight to pay the high bills.

9. Vladimir Levin
Graduates St. Tekhnologichesky Petersburg University.
CitiBank computer deceive and profit 10 million dollars.
Interpol arrested at Heathrow Airport in 1995

10. Steve Wozniak
Build an Apple computer and use the "blue box" untukkepentingan own.

11. Tsutomu Shimomura
Kevin Mitnick managed to capture the trace.

12. Dennis Ritchie and Ken Thompson
Dennis Ritchie C language is an author, with Ken Thomson writes an elegant UNIX operating system.

13. Eric Steven Raymond
Mr. hackers. A pioneer hacktivist and opensource movement.
Write a lot of hacking guides, one of which is: "How To Become A Hacker" and "The new hacker's Dictionary".
So phenomenal and is known by the whole community of hacking world.
According to Eric, "the world has a lot of interesting problems to be solved danmenanti".

14. Johan Helsingius
Operating the world's most popular anonymous remailer.