Top 10 Greatest Hackers
Complete list of Great Hackers by Stats and Contribution.He did not invented anything, But he put the Shape to hacking. He have done operations with CWI from bad to Good. Fighting for Equal Rights and The most contributing Guy in the #OP Killuminati. He have great story from where he Started. I also know him in real life.
Xtam4 is a black hat hacker who got his fame around 2013-14. Through his group he controlled many major hacking groups by controlling their leaders. Most of the deep web market websites and Forums are also controlled by him. Might not be very heroic figure portrayed but since this list is in term of hacking skills, power and contribution. I think he should be number 1 since his army of hackers out number many hacking groups and are not random hackers who are new to web. Most votes here are from the IRC that's what I figured. This is the answer for those asking who is Xtam4 or they can just Check Wikipedia for GForce Pakistan.
I know who he is he thought me how to hack and where to start
XTAM4 Is a awesome hacker, I don't know anything he can't do.

Ilia Hashemi is an Iranian Hacker system administrator developer and entrepreneur
Ilia Hashemi is an iranian-germany developer of highly advanced technologies
He is amazing iranian-germany hacker of microsoft
Iranian developer of ultra modern technologies
To an intelligent person all of this is very clear. You fear what you hate. Mauritania hates Xtam4 and his monkey followers follow him whatever he do. You can see they can't even speak proper English. They are poorly educated hackers. I am one of the guys of Xtam4. I happen to stumble upon this list. Not a single was given by even a single group member about this list. Their goal happens to be very big than this list. But Anonghost just wants to win this list. You can see the difference between those 2 hacking groups. Its very big of a difference. One have great heights to accomplish and the other comes to same list everyday to spam and flame comments with their half broken English. Farewell.
-Stk
If xtam4 is on the list it makes sense as for any other hacker from famous hacking group that at least made it to wikipedia and major news several times but Mauritania attacker is common hacker like every other.
A total show off. Use mass deface for random sites. I was able to do that when I was 14 years old.
Lol fake votes such a faker mauritania
COME ON! He should be the best hacker in the world he invented jailbreaking apple devices and he could
Hack sony which is really hard!
Yes I agree, but Mauritania Attacker still the best, go check the archive and see the difference
MA above this guy? what a joke. I guess ISIS did really made some impact on Cyberworld
Why MA is above Geohots dark dante Shawn Fanning ahhaha what
1) Dark Dante
2) Shawn Fanning
3) Kevin Mitnick
4) Robert Morris
5) Xtam4 or Fyodor
6) Vallah
16-year-old black hat hacker, In an anonymous PBS interview, he professes
Should be number 1 and There should be no hacker like MA on this list.
He must be 3rd after kevin mitnick and Mauritania
Better then xtam4, should be on number 1
He's totally great talent.
Not the best, But Xtam4 is great no disrespect to him! Vallah for #2!
Vallah is great hacker. Should be above Dark Dante and Geohots
The Creator of nmap!
Teeh great karl koch!
My favourite till now
I vote for kevin mitnick but I don't think MA made any techniques it was Kevin who made techniques for hackers.
Great Hacker I vote for him, but I can't forget Mauritania Attacker who changed the cyber world with some new tecnics!
Probabbly the best hacker! Has contributed a lot to all hackers,shared 0days and free tools! Also a great developer!
One of the best hackers here...
Yea, It's a good one
Its an pro coder
#1. Yosef Hacker
#2. VallaH
#3. Xtam4
#4. Kevin Mitnick.
#5. Dark Dante.
Just a defacer, but not like Mauritania Attacker who is Doctor!
Best defacer from indonesian
Best hacker from indonesian
Is the best,Indonesia defacer
He's awesome Hacker
Great hacker

Hero of hackers
The best among them all
truly the best
Phreaked his way to a new Porsche with a radio contest on an LA station. Arrested and jailed and went on to become a journalist and editor at Wired.