he terms hacker and hack are marked by contrasting positive and negative connotations. Computer programmers often use the words hacking and hacker to express admiration for the work of a skilled software developer, but may also use them in a negative sense to describe the production of inelegant kludges. Some frown upon using hacking as a synonym for security cracking in distinct contrast to the larger world, in which the word hacker is typically used to describe someone who “hacks into” a system by evading or disabling security measures. While “hack” was originally more used as a verb for “messing about with”, the meaning of the term has shifted over the decades since it first came into use in a computer context. As usage has spread more widely, the primary meaning of newer users of the word has shifted to one which conflicts with the original primary emphasis. Currently, “hacker” is used in two main ways, one pejorative and one complimentary. In popular usage and in the media, it most often refers to computer intruders or criminals, with associated pejorative connotations. In the computing community, the primary meaning is a complimentary description for a particularly brilliant programmer or technical expert. A large segment of the technical community insist the latter is the “correct” usage of the word. The mainstream media’s current usage of the term may be traced back to the early 1980s (see History). When the term was introduced to wider society by the mainstream media in 1983, even those in the computer community referred to computer intrusion as “hacking”, although not as the exclusive use of that word. In reaction to the increasing media use of the term exclusively with the criminal connotation, the computer community began to differentiate their terminology. Several alternative terms such as “black hat” and “cracker” were coined in an effort to distinguish between those performing criminal activities, and those whose activities were the legal ones referred to more frequently in the historical use of the term “hack”. Analogous terms such as “white hats” and “gray hats” developed as a result. However, since network news use of the term pertained primarily to the criminal activities despite this attempt by the technical community to preserve and distinguish the original meaning, the mainstream media and general public continue to describe computer criminals with all levels of technical sophistication as “hackers” and does not generally make use of the word in any of its non-criminal connotations. As a result of this difference, the definition is the subject of heated controversy. The wider dominance of the pejorative connotation is resented by many who object to the term being taken from their cultural jargon and used negatively, including those who have historically preferred to self-identify as hackers. Many advocate using the more recent and nuanced alternate terms when describing criminals and others who negatively take advantage of security flaws in software and hardware. Others prefer to follow common popular usage, arguing that the positive form is confusing and unlikely to become widespread in the general public. A minority still stubbornly use the term in both original senses despite the controversy, leaving context to clarify which meaning is intended. It is noteworthy, however, that the positive definition of hacker was widely used as the predominant form for many years before the negative definition was popularized. “HACKER” can therefore be seen as a shibboleth, identifying those who use the technically-oriented sense as members of the computing community. A possible middle ground position has been suggested, based on the observation that “hacking” describes a collection of skills which are used by hackers of both descriptions for differing reasons. The Internet abounds with hackers, known as crackers or “BLACK HATS” who work to exploit computer systems. They are the ones you’ve seen on the news being hauled away for cybercrimes. Some of them do it for fun and curiosity, while others are looking for personal gain. In this section we profile five of the most famous and interesting “black hat” hackers. Hackers that use their skills for good are classified as “WHITE HAT.” These white hats often work as certified “Ethical Hackers,” hired by companies to test the integrity of their systems. Others, operate without company permission by bending but not breaking laws and in the process have created some really cool stuff. In this section we profile five white hat hackers and the technologies they have developed. The term CRACKER was coined by Richard Stallman to provide an alternative to using the existing word hacker for this meaning. The somewhat similar activity of defeating copy prevention devices in software which may or may not be legal in a country’s laws is actually software cracking. The portrayal of hackers in the media has ranged from the high-tech super-spy, as in Mission Impossible where Ethan Hunt repels from the ceiling to hack the CIA computer system and steal the “NOC list,” to the lonely anti-social teen who is simply looking for entertainment. The reality, however, is that hackers are a very diverse bunch, a group simultaneously blamed with causing billions of dollars in damages as well as credited with the development of the World Wide Web and the founding of major tech companies. There are numbers of Hackers in the world till date, Few has become famous by their Black hat work and few of them are famous by their Ethical Hacking. Below is a list of World’s All Time Best Hackers and Crackers. Although we represent them by Hackers only because what every they did, was wrong but one thing is sure they were Brilliant. For sure we miss some of, because we don’t have information about other russians, chinese or roumanians not so famous. Hacking is not a work of simple mind, only Intelligent Mind can do that.
JONATHAN JAMES
James gained notoriety when he became the first juvenile to be sent to prison for hacking. He was sentenced at 16 years old. In an anonymous PBS interview, he professes, “I was just looking around, playing around. What was fun for me was a challenge to see what I could pull off.” James’s major intrusions targeted high-profile organizations. He installed a backdoor into a Defense Threat Reduction Agency server. The DTRA is an agency of 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 emails and capture employee usernames and passwords. James also cracked into NASA computers, stealing software worth 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 humidity within the living space.” NASA was forced to shut down its computer systems, ultimately racking up a $41,000 cost. James explained that he downloaded the code to supplement his studies on C programming, but contended, “The code itself was crappy . . . certainly not worth $1.7 million like they claimed.” Given the extent of his intrusions, if James, also known as “c0mrade,” had been an adult he likely would have served at least 10 years. Instead, he was banned from recreational computer use and was slated to serve a six-month sentence under house arrest with probation. However, he served six months in prison for violation of parole. Today, James asserts that he’s learned his lesson and might start a computer security company.
ADRIAAN LAMO
Lamo’s claim to fame is his break-ins at major organizations like The New York Times and Microsoft. Dubbed 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.” Lamo’s intrusions consisted mainly of penetration testing, in which he found flaws in security, exploited them and then informed companies of their shortcomings. His hits include Yahoo!, Bank of America, Citigroup and Cingular. When white hat hackers are hired by companies to do penetration testing, it’s legal. What Lamo did is not.When he broke into The New York Times’ intranet, things got serious. He added himself to a list of experts and viewed personal information on contributors, including Social Security numbers. Lamo also hacked into The Times’ LexisNexis account to research high-profile subject matter. 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.
KEVIN MITNICK
A self-proclaimed “hacker poster boy,” Mitnick went through a highly publicized pursuit by authorities. His mischief was hyped by the media but his actual offenses may be less notable than his notoriety suggests. The Department of Justice describes him as “the most wanted computer criminal in United States history.” His exploits were detailed in two movies: Freedom Downtime and Takedown. Mitnick had a bit of hacking experience before committing the offenses that made him famous. He started out exploiting 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 breaking into the Digital Equipment Corporation’s computer network and stealing software. Mitnick’s mischief got serious when he went on a two and a half year “coast-to-coast hacking spree.” The CNN article, “Legendary computer hacker released from prison,” explains that “he hacked into computers, stole corporate secrets, scrambled phone networks and broke into the national defense warning system.” He then hacked into computer expert and fellow hacker Tsutomu Shimomura’s home computer, which led to his undoing. Today, Mitnick has been able to move 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.
KEVIN POULSEN
Also known as Dark Dante, Poulsen gained recognition for his hack of LA radio’s KIIS-FM phone lines, which earned him a brand new Porsche, among other items. Law enforcement dubbed him “the Hannibal Lecter of computer crime.” Authorities began to pursue Poulsen after he hacked into a federal investigation database. During this pursuit, he further drew the ire of the FBI by hacking into federal computers for wiretap information. His hacking specialty, however, revolved around telephones. Poulsen’s most famous hack, KIIS-FM, was accomplished by taking over all of the station’s phone lines. In a related feat, Poulsen also “reactivated old Yellow Page escort telephone numbers for an acquaintance who then ran a virtual escort agency.” Later, when his photo came up on the show Unsolved Mysteries, 1-800 phone lines for the program crashed. Ultimately, Poulsen was captured in a supermarket and served a sentence of five years. Since serving time, Poulsen has worked as a journalist. He is now a senior editor for Wired News. His most prominent article details his work on identifying 744 sex offenders with MySpace profiles.
ROBERT TAPPAN MORRIS
Morris, 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 to see how large the Internet was. The worm, however, replicated itself excessively, slowing computers down so that they were no longer usable. It is not possible to know exactly how many computers were affected, but experts estimate an impact of 6,000 machines. He was sentenced to three years’ probation, 400 hours of community service and a fined $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 as Chord and wireless mesh networks such as Roofnet.
STEPHEN WOZNIAK
“Woz” is famous for being the “other Steve” of Apple. Wozniak, along with current Apple CEO Steve Jobs, co-founded Apple Computer. He has been awarded with the National Medal of Technology as well as honorary doctorates from Kettering University and Nova Southeastern University. Additionally, Woz was inducted into the National Inventors Hall of Fame in September 2000. Woz got his start in hacking making blue boxes, devices that bypass telephone-switching mechanisms to make free long-distance calls. After reading an article about phone phreaking in Esquire, Wozniak called up his buddy Jobs. The pair did research on frequencies, then built and sold blue boxes to their classmates in college. Wozniak even used a blue box to call the Pope while pretending to be Henry Kissinger. Wozniak dropped out of college and came up with the computer that eventually made him famous. Jobs had the bright idea to sell the computer as a fully assembled PC board. The Steves sold Wozniak’s cherished scientific calculator and Jobs’ VW van for capital and got to work assembling prototypes in Jobs’ garage. Wozniak designed the hardware and most of the software. In the Letters section of Woz.org, he recalls doing “what Ed Roberts and Bill Gates and Paul Allen did and tons more, with no help.” Wozniak and Jobs sold the first 100 of the Apple I to a local dealer for $666.66 each. Woz no longer works full time for Apple, focusing primarily on philanthropy instead. Most notable is his function as fairy godfather to the Los Gatos, Calif. School District. “Wozniak ‘adopted’ the Los Gatos School District, providing students and teachers with hands-on teaching and donations of state-of-the-art technology equipment.”
TIM BERNERS-LEE
Berners-Lee is famed as the inventor of the World Wide Web, the system that we use to access sites, documents and files on the Internet. He has received numerous recognitions, most notably the Millennium Technology Prize. While a student at Oxford University, Berners-Lee was caught hacking access with a friend and subsequently banned from University computers. w3.org reports, “Whilst at Oxford, he built his first computer with a soldering iron, TTL gates, an M6800 processor and an old television.” Technological innovation seems to have run in his genes, as Berners-Lee’s parents were mathematicians who worked on the Manchester Mark1, one of the earliest electronic computers. While working with CERN, a European nuclear research organization, Berners-Lee created a hypertext prototype system that helped researchers share and update information easily. He later realized that hypertext could be joined with the Internet. Berners-Lee recounts how he put them together: “I just had to take the hypertext idea and connect it to the TCP and DNS ideas and – ta-da! – the World Wide Web.” Since his creation of the World Wide Web, Berners-Lee founded the World Wide Web Consortium at MIT. The W3C describes itself as “an international consortium where Member organizations, a full-time staff and the public work together to develop Web standards.” Berners-Lee’s World Wide Web idea, as well as standards from the W3C, is distributed freely with no patent or royalties due.
LINUS TORVALDS
Torvalds fathered Linux, the very popular Unix-based operating system. He calls himself “an engineer,” and has said that his aspirations are simple, “I just want to have fun making the best damn operating system I can.” Torvalds got his start in computers with a Commodore VIC-20, an 8-bit home computer. He then moved on to a Sinclair QL. Wikipedia reports that he modified the Sinclair “extensively, especially its operating system.” Specifically, Torvalds hacks included “an assembler and a text editor…as well as a few games.” Torvalds created the Linux kernel in 1991, using the Minix operating system as inspiration. He started with a task switcher in Intel 80386 assembly and a terminal driver. After that, he put out a call for others to contribute code, which they did. Currently, only about 2 percent of the current Linux kernel is written by Torvalds himself. The success of this public invitation to contribute code for Linux is touted as one of the most prominent examples of free/open source software. Currently, Torvalds serves as the Linux ringleader, coordinating the code that volunteer programmers contribute to the kernel. He has had an asteroid named after him and received honorary doctorates from Stockholm University and University of Helsinki. He was also featured in Time Magazine’s “60 Years of Heroes.”
RICHARD STALLMAN
Stallman’s fame derives from the GNU Project, which he founded to develop a free operating system. For this, he’s known as the father of free software. His “Serious Bio” asserts, “Non-free software keeps users divided and helpless, forbidden to share it and unable to change it. A free operating system is essential for people to be able to use computers in freedom.” Stallman, who prefers to be called rms, got his start hacking at MIT. He worked as a “staff hacker” on the Emacs project and others. He was a critic of restricted computer access in the lab. When a password system was installed, Stallman broke it down, resetting passwords to null strings, then sent users messages informing them of the removal of the password system. Stallman’s crusade for free software started with a printer. At the MIT lab, he and other hackers were allowed to modify code on printers so that they sent convenient alert messages. However, a new printer came along – one that they were not allowed to modify. It was located away from the lab and the absence of the alerts presented an inconvenience. It was at this point that he was “convinced…of the ethical need to require free software.” With this inspiration, he began work on GNU. Stallman wrote an essay, “The GNU Project,” in which he recalls choosing to work on an operating system because it’s a foundation, “the crucial software to use a computer.” At this time, the GNU/Linux version of the operating system uses the Linux kernel started by Torvalds. GNU is distributed under “copyleft,” a method that employs copyright law to allow users to use, modify, copy and distribute the software. Stallman’s life continues to revolve around the promotion of free software. He works against movements like Digital Rights Management (or as he prefers, Digital Restrictions Management) through organizations like Free Software Foundation and League for Programming Freedom. He has received extensive recognition for his work, including awards, fellowships and four honorary doctorates.
TSUTOMU SHIMOMURA
Shimomura reached fame in an unfortunate manner: he was hacked by Kevin Mitnick. Following this personal attack, he made it his cause to help the FBI capture him. Shimomura’s work to catch Mitnick is commendable, but he is not without his own dark side. Author Bruce Sterling recalls: “He pulls out this AT&T cell phone, pulls it out of the shrinkwrap, finger-hacks it, and starts monitoring phone calls going up and down Capitol Hill while an FBI agent is standing at his shoulder, listening to him.” Shimomura out-hacked Mitnick to bring him down. Shortly after finding out about the intrusion, he rallied a team and got to work finding Mitnick. Using Mitnick’s cell phone, they tracked him near Raleigh-Durham International Airport. The article, “SDSC Computer Experts Help FBI Capture Computer Terrorist” recounts how Shimomura pinpointed Mitnick’s location. Armed with a technician from the phone company, Shimomura “used a cellular frequency direction-finding antenna hooked up to a laptop to narrow the search to an apartment complex.” Mitnick was arrested shortly thereafter. Following the pursuit, Shimomura wrote a book about the incident with journalist John Markoff, which was later turned into a movie.
LOYD BLANKENSHIP
Also known as The Mentor, Blankenship was a member of a couple of hacker elite groups in the 1980s – notably the Legion Of Doom, who battled for supremacy online against the Masters Of Deception. However, his biggest claim to fame is that he is the author of the Hacker Manifesto (The Conscience of a Hacker), which he wrote after he was arrested in 1986. The Manifesto states that a hacker’s only crime is curiosity and is looked at as not only a moral guide by hackers up to today, but also a cornerstone of hacker philosophy. It was reprinted in Phrack magazine and even made its way into the 1995 film Hackers, which starred Angelina Jolie.
MICHAEL CALCE
Calce gained notoriety when he was just 15 years old by hacking into some of the largest commercial websites in the world. On Valentine’s Day in 2000, using the hacker alias MafiaBoy, Calce launched a series of denial-of-service attacks across 75 computers in 52 networks, which affected sites such as eBay, Amazon and Yahoo. He was arrested after he was noticed boasting about his hack in online chat rooms. He was received a sentence of eight months of “open custody,” one year of probation, restricted use of the internet, and a small fine.
JOHN DRAPER
AKA Captain Crunch. Although technically a phone phreak, the Captain is seen by many as the father of modern “hackery” and phreaking, as well as being somewhat of a legend. Born in 1944, his legend began when he was informed by a friend that a toy whistle given away in boxes of the Cap’n Crunch cereal would emit a 2600 hertz tone when the 3 rd hole was glued up. This tone was a frequency that was used in the making of phone calls at the time and would eventually lead to Draper creating “blue boxes”, devices capable of replicating other dialing tones, effectively making calls for free. So here was a man that could circumvent phone charges all thanks to a small cereal box toy. Having given an interview with Esquire magazine in 1971, it exposed the world to the subject of phone phreaking and Draper was arrested in 1972 on toll fraud charges, being sentenced to five years’ probation. In the mid 70s, he taught some of his skills to Apple co-founders Steve Jobs and Steve Wozniak, after Wozniak had read the Esquire article. Draper was even temporarily employed by Apple, even writing the code for EasyWriter, the first Apple II word processor.
THE MASTERS OF DECEPTION
The Masters Of Deception (MoD) were a New York-based group of elite hackers who targeted US phone systems in the mid to late 80s. A splinter group from the Legion Of Doom (LoD), they became a target for the authorities after they broke into AT&T’s computer system. The group was eventually brought to heel in 1992 with many of its members receiving jail or suspended sentences.
DAVID L. SMITH
Smith is the author of the notorious Melissa worm virus, which was the first successful email-aware virus distributed in the Usenet discussion group alt. sex. The virus original form was sent via email. Smith was arrested and later sentenced to jail for causing over $80 million worth of damage.
SVEN JASCHAN
Jaschan was found guilty of writing the Netsky and Sasser worms in 2004 while he was still a teenager. The viruses were found to be responsible for 70 per cent of all the malware seen spreading over the internet at the time. Jaschan received a suspended sentence and three years probation for his crimes. He was also hired by a security company.
GARY McKINNON
Accused of mounting the largest ever hack of United States government computer networks — including Army, Air Force, Navy and NASA systems The court has recommended that McKinnon be extradited to the United States to face charges of illegally accessing 97 computers, causing US$700,000 in damage.
VLADIMIR LEVIN
Levin accessed the accounts of several large corporate customers of Citibank via their dial-up wire transfer service (Financial Institutions Citibank Cash Manager) and transferred funds to accounts set up by accomplices in Finland, the United States, the Netherlands, Germany and Israel. In 2005 an alleged 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 system administrator who managed to get hands on the ready data about how to penetrate in Citibank machines and then exploit them.ArkanoiD emphasized all the communications were carried over X.25 network and the Internet was not involved. ArkanoiD’s group in 1994 found out Citibank systems were unprotected and it spent several weeks examining the structure of the bank’s USA-based networks remotely. Members of the group played around 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).
MARK ABENE
Bborn 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.
ONEL 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.
CHENG ING-HAU
He was the creator of one of the deadly virus of all time “Chernobyl computer virus ” which had melted down many computers worldwide.
MUDGE
“Mudge” along with fellow hackers told the committee that computer security is so lax, they could disable the entire Internet in a half-hour.
JON LECH JOHANSEN
Johansen, who became a hero to computer hackers and was deemed a villain by Hollywood, is on trial for writing and distributing a program called DeCSS, software which makes it possible to copy protected DVD films. Prosecutors have asked to have his computers confiscated and called for him to pay $1,400 in court costs.
DIMITRY SKLYAROV
Russian computer programmer who was charged with violating copyrights, Sklyarov was jailed after developing software that allows the user to circumvent the copyright protections in Adobe Systems eBook reader program.
DENNIS MORAN
Moran, known on the Web as “Coolio,” pleaded guilty to hacking into national computer sites last year belonging to the Army, the Air Force and the anti-drug Dare.com.
DENNIS RITCHIE
KEN THOMPSON
JOHAN HELSINGIUS
ERIC STEVEN RAYMOND
IAN MURPHY
JOHN PERRY BARLOW
TIM BERNER LEE
