This article is about a type of malicious software code. For the psychedelic trance group, see Logic Bomb (band). Psychedelic trance or psytrance is a form of Electronic music characterized by hypnotic arrangements of synthetic rhythms and mesmerizing melodies Logic Bomb are Jonas Pettersson and Johan Krafft, a Psychedelic trance project from Sweden, founded in 1998

A logic bomb is a piece of code intentionally inserted into a software system that will set off a malicious function when specified conditions are met. In Communications a code is a rule for converting a piece of Information (for example a letter, Word, Phrase, or For example, a programmer may hide a piece of code that starts deleting files (such as the salary database), should they ever leave the company. A computer file is a block of Arbitrary Information, or resource for storing information which is available to a Computer program and is usually A salary is a form of periodic payment from an Employer to an Employee, which may be specified in an Employment contract. A Computer Database is a structured collection of records or data that is stored in a computer system

Software that is inherently malicious, such as viruses and worms, often contain logic bombs that execute a certain payload at a pre-defined time or when some other condition is met. A computer virus is a Computer program that can copy itself and infect a computer without permission or knowledge of the user A computer worm is a self-replicating Computer program. It uses a network to send copies of itself to other nodes (computer terminals on the network and it may do so without Material Transmitted over a network (either computer or telecommunications network) includes both Data and information that identifies the source and destination This technique can be used by a virus or worm to gain momentum and spread before being noticed. Many viruses attack their host systems on specific dates, such as Friday the 13th or April Fool's Day. Friday the 13th is superstitiously considered a day of bad Luck in English - French - and German -speaking countries as well as in other This article is about the informal holiday For other uses see April Fool. Trojans that activate on certain dates are often called "time bombs".

To be considered a logic bomb, the payload should be unwanted and unknown to the user of the software. As an example, trial programs with code that disables certain functionality after a set time are not normally regarded as logic bombs.

Contents 1 Historic logic bombs 2 Fictional logic bombs 3 See also 4 References

Historic logic bombs

• In 1982, the Trans-Siberian Pipeline incident occurred. A KGB operative was to steal the plans for a sophisticated control system and its software from a Canadian firm, for use on their Siberian pipeline. KGB ( Transliteration of "КГБ" is the Russian abbreviation of Committee for State Security ( Komityet Gosudarstvennoy Bezopasnosty The CIA was tipped off by documents in the Farewell Dossier and had the company insert a logic bomb in the program for sabotage purposes. near as long as it used to be several months ago It has been actively summarized and split into sub-articles and there is a dynamic talk page discussion of all The Farewell Dossier was a collection of documents containing intelligence gathered and handed over to NATO by the KGB Defector Colonel Vladimir Vetrov Sabotage is a deliberate action aimed at weakening an enemy oppressor or employer through subversion obstruction disruption and/or destruction ^[1] This eventually resulted in "the most monumental non-nuclear explosion and fire ever seen from space". ^[2]
• Michelangelo was a logic bomb designed to activate yearly since the early 1990s, on the birthday of the painter of the same name - March 6th. The Michelangelo virus is a Computer virus first discovered in April 1991 in New Zealand. In 1992, mass hysteria broke out, but only around 20,000 computers were ever affected in that year, and only two in 1998.
• In June 1992, a defense contractor General Dynamics employee, Michael Lauffenburger, was arrested for inserting a logic bomb that would delete vital rocket project data. General Dynamics Corporation ( is a defense conglomerate formed by Mergers and Divestitures and as of 2008 it is the fifth largest Defense contractor It was alleged that his plan was to return as a highly paid consultant to fix the problem once it triggered. Another employee of the company stumbled upon the bomb before it was triggered. Lauffenburger was charged with computer tampering and attempted fraud and faced potential fines of $500,000 and jail time,^[3] but was ultimately fined $5,000. ^[4]
• In February 2000, Tony Xiaotong, indicted before a grand jury, was accused of planting a logic bomb during his employment as a programmer and securities trader at Deutsche Morgan Grenfell. 2000 ( MM) was a Leap year that started on Saturday of the Common Era, in accordance with the Gregorian calendar. In the Common law, a grand jury is a type of Jury which determines whether there is enough evidence for a trial. Morgan Greenfell & Co was a London Investment bank, which traces its roots back to the J The bomb, planted in 1996, had a trigger date of July 20, 2000, but was discovered by other programmers in the company. Events 1304 - Wars of Scottish Independence: Fall of Stirling Castle - King Edward I of England takes the last rebel stronghold 2000 ( MM) was a Leap year that started on Saturday of the Common Era, in accordance with the Gregorian calendar. Removing and cleaning up after the bomb allegedly took several months. ^[5]
• On October 2, 2003 Yung-Hsun Lin, also known as Andy Lin, changed code on a server at Medco Health Solutions Inc. Events 1187 - Siege of Jerusalem: Saladin captures Jerusalem after 88 years of Crusader rule Year 2003 ( MMIII) was a Common year starting on Wednesday of the Gregorian calendar. Medco Health Solutions Inc ( is a leading Pharmacy benefit manager (PBM company based in Franklin Lakes New Jersey. Fair Lawn, New Jersey headquarters, where he was employed as a Unix administrator, creating a logic bomb set to go off on his birthday in 2004. Fair Lawn is a borough in Bergen County, New Jersey, United States. It failed to work due to a programming error, so Lin corrected the error and reset it to go off on his next birthday, but it was discovered and disabled by a Medco computer systems administrator a few months before the trigger date. Lin pleaded guilty and was sentenced to 30 months in jail in a federal prison in addition to $81,200 in restitution. The charges held a maximum sentence of 10 years and a fine of US$250,000. ^[6][7]
• In June 2006 Roger Duronio, a disgruntled system administrator for UBS was charged with using a logic bomb to damage the company's computer network, and with securities fraud for his failed plan to drive down the company's stock with activation of the logic bomb. A system administrator, systems administrator, or sysadmin, is a person employed to maintain and operate a Computer system and/or network. UBS AG ( SWX: UBSN) is a diversified global financial services company with its main headquarters in Basel & Zürich, Switzerland ^[8][9][10] Duronio was later convicted and sentenced to 8 years and 1 month in prison, as well as a $3. 1 million restitution to UBS. ^[11]

Fictional logic bombs

• In Moffett's Ghost, an episode of Airwolf television series, Hawk loses control of the onboard computer, which was programmed on a timer by Airwolf's creator, Doctor Charles Henry Moffett. Airwolf is an American Television series that ran from 1984 through 1987 A television program (US television programme (UK or television show (U A computer is a Machine that manipulates data according to a list of instructions. Dr Charles Henry Moffet is a fictional character in the TV series Airwolf. . . once activated, Airwolf is set to destroy any aircraft in its range. Airwolf is an American Television series that ran from 1984 through 1987
• The Tom Clancy book Debt of Honor features a logic bomb installed in the code of various stock market computers. Thomas Leo Clancy Jr (born April 12 1947) is an American author best known for his technically detailed espionage and Military science storylines Debt of Honor ( 1994) is a Novel by Tom Clancy. It is a continuation of the series featuring his character Jack Ryan. A stock market, or (equity market is a private or public market for the trading of company Stock and derivatives of company
• Hugh Jackman's character in Swordfish, Stanley Jobson, claims to have "dropped a logic bomb through the trapdoor" while hacking into a Department of Defense network. Hugh Michael Jackman (born 12 October, 1968) is an Tony Award -winning and Emmy Award -winning Australian Actor Swordfish is a 2001 action / thriller Film. It was directed by Dominic Sena and stars Hugh Jackman The United States Department of Defense ( DOD or DoD) is the federal department charged with coordinating and supervising all agencies and functions of the government
• In an episode of the second season of the 2004 version of the TV series Battlestar Galactica, the Cylons leave a logic bomb in the ship's computers after briefly gaining access to them. Battlestar Galactica is an Emmy and Peabody Award -winning serial drama Television program created by Ronald D The Cylons are a fictional race of bio-mechanical beings appearing in the reimagined Battlestar Galactica television series It later causes a series of nearly catastrophic system malfunctions.
• In the CIA level of Tom Clancy's Splinter Cell, a conversation can be heard with a reference to a logic bomb. Tom Clancy's Splinter Cell is a series of Video games endorsed by American author Tom Clancy.
• In the PC strategy game Empire Earth, the Japanese special unit, the Cyber Ninja, has an attack called "Logic Bomb". Empire Earth, also known as EE, is a Real-time strategy Computer game developed by Stainless Steel Studios This bears little resemblance to a real logic bomb, instead simply disabling an enemy building for a brief period.
• In Season 3 of 24, Nina Myers manipulates Jack Bauer to unknowingly activate a virus in the CTU computer systems. 24 is an Emmy and Golden Globe award-winning American action Drama Television series. Nina Myers is a Fictional character on the television series 24, played by Sarah Clarke. Jack Bauer is the Protagonist of the United States Television series 24, in which he has trained and worked in various capacities It is activated by a phone call to a certain number.
• In Season 6, Episode 8 of Spooks the Yalta organization sets off a logic bomb planted within the American defense network to shutdown all US controlled satellites. Spooks is a BAFTA award-winning British television drama series produced by the independent production company Kudos for BBC One It is activated by the entry of a code into a game which causes the logic bomb to copy a virus to all the satellites and shut them down.

See also

• Backdoor (computing)
• Easter egg (virtual)

References

1. ^ Tech sabotage during the Cold War
2. ^ CIA slipped bugs to Soviets
3. ^ Programmer Accused of Plotting to Sabotage Missile Project
4. ^ Logic bombs, Part 1
5. ^ “Man Indicted in Computer Case”, The New York Times: C. A backdoor in a Computer system (or Cryptosystem or Algorithm) is a method of bypassing normal Authentication, securing remote access to a computer A virtual Easter egg is an intentional Hidden message or feature in an object such as a movie, Book 7, 2000-02-10 
6. ^ Vijayan, Jaikumar. 2000 ( MM) was a Leap year that started on Saturday of the Common Era, in accordance with the Gregorian calendar. Events 1355 - The St Scholastica's Day riot breaks out in Oxford, England, leaving 63 scholars and perhaps 30 locals dead Unix Admin Pleads Guilty to Planting Logic Bomb. PC World. Retrieved on 2007-09-22. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 66 - Emperor Nero creates the Legion I Italica. 1236 - The Lithuanians
7. ^ 2.5 Years in Jail for Planting 'Logic Bomb'. Slashdot.
8. ^ Man accused of crashing UBS servers | The Register
9. ^ Nightmare On Wall Street: Prosecution Witness Describes 'Chaos' In UBS PaineWebber Attack - News byy InformationWeek
10. ^ Are Background Checks Necessary For IT Workers? Ask UBS PaineWebber - VARBusiness
11. ^ Former UBS Computer Systems Manager Gets 97 Months for Unleashing “Logic Bomb” on Company Network

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