Hackers a group that consists of skilled computer enthusiasts. A black hat is a person who compromisesthe security of a computer system without permission from an authorized party, typically with malicious intent. The termwhite hat is used for a person who is ethically opposed to the abuse of computer systems, but is frequently no less skilled.The term cracker was coined by Richard Stallman to provide an alternative to using the existing word hacker for this meaning.
These are the top 10 Hackers in the world till date, Few has become famous by their Black hat work and some of them are famous by their Ethical Hacking.
1. Gary McKinnon
top 10 hackers gary in world Gary McKinnon, 40, accused of mounting the largest ever hack of United Statesgovernment computer networks — including Army, Air Force, Navy and NASA systems The court has recommendedthat McKinnon be extradited to the United States to face charges of illegally accessing 97 computers,causing US$700,000 (400,000 pounds; euro 588,000) in damage.
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2. Jonathan James
Jonathan james world top 10 hackersThe youth, known as “cOmrade” on the Internet, pleaded guilty tointercepting 3,300 email messages at one of the Defense Department’s most sensitive operations andstealing data from 13 NASA computers, including some devoted to the new International Space Station. James gained notoriety when he became the first juvenile to be sent to prison for hacking. He was sentenced at 16 years old. He installed a backdoor into a Defense Threat Reduction Agency server. The DTRA is an agency off the Department of Defense charged with reducing the threat to the U.S. and its allies from nuclear, biological,chemical, conventional and special weapons. The backdoor he created enabled him to view sensitive e-mailsand capture employee usernames and passwords.James also cracked into NASA computers, stealing softwareworth approximately $1.7 million. According to the Department of Justice, “The software supported the International Space Station’s physical environment, including control of the temperature and humiditywithin the living space.” NASA was forced to shut down its computer systems, ultimately racking up a $41,000 cost.
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3. Adrian Lamo
andrew lamo top most hacker in worldDubbed the “homeless hacker,” he used Internet connections at Kinko’s,coffee shops and libraries to do his intrusions. In a profile article, “He Hacks by Day, Squats by Night,” Lamo reflects,
“I have a laptop in Pittsburgh, a change of clothes in D.C. It kind of redefines the term multi-jurisdictional.”Dubbed the“homeless hacker,” he used Internet connections at Kinko’s, coffee shops and libraries to do his intrusions.For his intrusion at The New York Times, Lamo was ordered to pay approximately $65,000 in restitution.He was also sentenced to six months of home confinement and two years of probation, which expired January 16, 2007.Lamo is currently working as an award-winning journalist and public speaker.
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4. Kevin Mitnick
kevin mitnick top most world hackersThe Department of Justice describes him as “the most wanted computer criminalin United States history.” His exploits were detailed in two movies: Freedom Downtime and Takedown. He started outexploiting the Los Angeles bus punch card system to get free rides. Then, like Apple co-founder Steve Wozniak,dabbled in phone phreaking. Although there were numerous offenses, Mitnick was ultimately convicted for breakinginto the Digital Equipment Corporation’s computer network and stealing software.Today, Mitnick has been able tomove past his role as a black hat hacker and become a productive member of society. He served five years,about 8 months of it in solitary confinement, and is now a computer security consultant, author and speaker.
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5. Kevin Poulsen
kevin poulsen worlds best hacker Also known as Dark Dante, Poulsen gained recognition for his hack ofLA radio’s KIIS-FM phone lines, (taing over all of the station’s phone lines) which earned him a brand new Porsche,among other items. Law enforcement dubbed him “the Hannibal Lecter of computer crime.”Authorities began topursue Poulsen after he hacked into a federal investigation database. During this pursuit, he further drew the ireof the FBI by hacking into federal computers for wiretap information.His hacking specialty, however, revolved aroundtelephones. Poulsen’s most famous hack, In a related feat, Poulsen also “reactivated old Yellow Page escort telephonenumbers for an acquaintance who then ran a virtual escort agency.” Later, when his photo came up on the showUnsolved Mysteries, 1-800 phone lines for the program crashed. Ultimately, Poulsen was captured in a supermarketand served a sentence of five years.Since serving time, Poulsen has worked as a journalist. He is now a senioreditor for Wired News. His most prominent article details his work on identifying 744 sex offenders with MySpace profiles.
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6.Robert Tappan Morris
morris one of top 10 hacker n crackerMorris, son of former National Security Agency scientist Robert Morris,is known as the creator of the Morris Worm, the first computer worm to be unleashed on the Internet.As a result of this crime, he was the first person prosecuted under the 1986 Computer Fraud and Abuse Act.Morris wrote the code for the worm while he was a student at Cornell. He asserts that he intended to use it tosee how large the Internet was. The worm, however, replicated itself excessively, slowing computers down so thatthey were no longer usable. It is not possible to know exactly how many computers were affected, but experts estimatean impact of 6,000 machines. He was sentenced to three years’ probation, 400 hours of community service and afined $10,500.Morris is currently working as a tenured professor at the MIT Computer Science and Artificial Intelligence Laboratory.He principally researches computer network architectures including distributed hash tables such asChord and wireless mesh networks such as Roofnet.
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7. Vladimir Levin
Vladimir Levin top most hacker in worldLevin accessed the accounts of several large corporate customers ofCitibank via their dial-up wire transfer service (Financial Institutions Citibank Cash Manager) and transferred fundsto accounts set up by accomplices in Finland, the United States, the Netherlands, Germany and Israel.In 2005 analleged member of the former St. Petersburg hacker group, claiming to be one of the original Citibank penetrators,published under the name ArkanoiD a memorandum on popular Provider.net.ru website dedicated to telecom market.According to him, Levin was not actually a scientist (mathematician, biologist or the like) but a kind of ordinary systemadministrator who managed to get hands on the ready data about how to penetrate in Citibank machinesand then exploit them.ArkanoiD emphasized all the communications were carried over X.25 network and theInternet was not involved. ArkanoiD’s group in 1994 found out Citibank systems were unprotected and it spentseveral weeks examining the structure of the bank’s USA-based networks remotely. Members of the group playedaround with systems’ tools (e.g. were installing and running games) and were unnoticed by the bank’s staff.Penetrators did not plan to conduct a robbery for their personal safety and stopped their activities at some time.Someone of them later handed over the crucial access data to Levin (reportedly for the stated $100).
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8. David Smith
david smith top 10 hacker till nowDavid Smith, the author of the e-mail virus known as Melissa, which swamped computers around the world, spreading like a malicious chain letter. He was facing nearly 40 years in jail .About 63,000 viruses have rolled through the Internet, causing an estimated $65 billion in damage, but Smithis the only person to go to federal prison in the United States for sending one.
9. Mark Abene
mark abene internation us hacker in world
Abene (born 1972), better known by his pseudonym Phiber Optik, is a computer security hacker from New York City.
Phiber Optik was once a member of the Hacker Groups Legion of Doom and Masters of Deception. In 1994,he served a one-year prison sentence for conspiracy and unauthorized access to computer and telephone systems.Phiber Optik was a high-profile hacker in the early 1990s, appearing in The New York Times, Harper’s, Esquire,in debates and on television. Phiber Optik is an important figure in the 1995 non-fiction book Masters of Deception — The Gang that Ruled Cyberspace.
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10. Onel A. de Guzman
Onel A. de Guzman international hacker el A. de Guzman, a Filipino computer student, Greatest Hacker of all time.
He was creator of “Love Bug” virus that crippled computer e-mail systems worldwide.