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Jerusalem (computer Virus)
Jerusalem is a logic bomb DOS virus first detected at Hebrew University of Jerusalem, in October 1987. On infection, the Jerusalem virus becomes memory resident (using 2kb of memory), and then infects every executable file run, except for COMMAND.COM. COM files grow by 1,813 bytes when infected by Jerusalem and are not re-infected. Executable files grow by 1,808 to 1,823 bytes each time they are infected, and are then re-infected each time the files are loaded until they are too large to load into memory. Some .EXE files are infected but do not grow because several overlays follow the genuine .EXE file in the same file. Sometimes .EXE files are incorrectly infected, causing the program to fail to run as soon as it is executed. The virus code itself hooks into interrupt processing and other low level DOS services. For example, code in the virus suppresses the printing of console messages if, for example, the virus is not able to infect a file on a read-only device such as a flop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Virus
A computer virus is a type of computer program that, when executed, replicates itself by modifying other computer programs and inserting its own code. If this replication succeeds, the affected areas are then said to be "infected" with a computer virus, a metaphor derived from biological viruses. Computer viruses generally require a host program. The virus writes its own code into the host program. When the program runs, the written virus program is executed first, causing infection and damage. A computer worm does not need a host program, as it is an independent program or code chunk. Therefore, it is not restricted by the host program, but can run independently and actively carry out attacks. Virus writers use social engineering deceptions and exploit detailed knowledge of security vulnerabilities to initially infect systems and to spread the virus. Viruses use complex anti-detection/stealth strategies to evade antivirus software. Motives for creating viruses can inclu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Israel Independence Day
Independence Day ( he, יום העצמאות ''Yom Ha'atzmaut'', lit. "Day of Independence") is the national day of Israel, commemorating the Israeli Declaration of Independence in 1948. The day is marked by official and unofficial ceremonies and observances. Because Israel declared independence on 14 May 1948, which corresponded with the Hebrew date 5 Iyar in that year, Yom Ha'atzmaut was originally celebrated on that date. However, to avoid Sabbath desecration, it may be commemorated one or two days before or after the 5th of Iyar if it falls too close to the Jewish Sabbath. Yom Hazikaron, the Israeli Fallen Soldiers and Victims of Terrorism Remembrance Day is always scheduled for the day preceding Independence Day. In the Hebrew calendar, days begin in the evening and Independence Day is observed from nightfall until the following evening of the designated day. The most recent occurrence of Yom Haatzmaut took place from sunset to sunset, 4-5 May 2022. History Indepen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timeline Of Computer Viruses And Worms
A timeline is a display of a list of events in chronological order. It is typically a graphic design showing a long bar labelled with dates paralleling it, and usually contemporaneous events. Timelines can use any suitable scale representing time, suiting the subject and data; many use a linear scale, in which a unit of distance is equal to a set amount of time. This timescale is dependent on the events in the timeline. A timeline of evolution can be over millions of years, whereas a timeline for the day of the September 11 attacks can take place over minutes, and that of an explosion over milliseconds. While many timelines use a linear timescale—especially where very large or small timespans are relevant -- logarithmic timelines entail a logarithmic scale of time; some "hurry up and wait" chronologies are depicted with zoom lens metaphors. History Time and space, particularly the line, are intertwined concepts in human thought. The line is ubiquitous in clocks in the f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haifa
Haifa ( he, חֵיפָה ' ; ar, حَيْفَا ') is the third-largest city in Israel—after Jerusalem and Tel Aviv—with a population of in . The city of Haifa forms part of the Haifa metropolitan area, the third-most populous metropolitan area in Israel. It is home to the Baháʼí Faith's Baháʼí World Centre, and is a UNESCO World Heritage Site and a destination for Baháʼí pilgrimage. Built on the slopes of Mount Carmel, the settlement has a history spanning more than 3,000 years. The earliest known settlement in the vicinity was Tell Abu Hawam, a small port city established in the Late Bronze Age (14th century BCE). Encyclopedia Judaica, ''Haifa'', Keter Publishing, Jerusalem, 1972, vol. 7, pp. 1134–1139 In the 3rd century CE, Haifa was known as a dye-making center. Over the millennia, the Haifa area has changed hands: being conquered and ruled by the Canaanites, Israelites, Phoenicians, Assyrians, Babylonians, Persians, Hasmoneans, Romans, Byzantines, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multipartite Virus
Multipartite is a class of virus that have segmented nucleic acid genomes, with each segment of the genome enclosed in a separate viral particle. Only a few ssDNA viruses have multipartite genomes, but a lot more RNA viruses have multipartite genomes.http://www.ndsu.edu/pubweb/~mcclean/plsc411/viral-genome-structures-lecture-and-overheads.pdf An advantage of multipartite genome is its ability to synthesize multiple mRNA strands to avoid the cellular constraint of monocistronicity. Until recently, it was not known how multipartite viruses could efficiently infect a single cell with all the segments that comprise their genome simultaneously, which was thought to be necessary for replication. It has since been shown that the segments typically do not infect the same cell. Rather, segments accumulate in different cells and the viral system functions through exchange of material between cells. Thus, multipartite viruses are not localized in space but rather more like a distributed netwo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hong Kong
Hong Kong ( (US) or (UK); , ), officially the Hong Kong Special Administrative Region of the People's Republic of China ( abbr. Hong Kong SAR or HKSAR), is a city and special administrative region of China on the eastern Pearl River Delta in South China. With 7.5 million residents of various nationalities in a territory, Hong Kong is one of the most densely populated places in the world. Hong Kong is also a major global financial centre and one of the most developed cities in the world. Hong Kong was established as a colony of the British Empire after the Qing Empire ceded Hong Kong Island from Xin'an County at the end of the First Opium War in 1841 then again in 1842.. The colony expanded to the Kowloon Peninsula in 1860 after the Second Opium War and was further extended when Britain obtained a 99-year lease of the New Territories in 1898... British Hong Kong was occupied by Imperial Japan from 1941 to 1945 during World War II; British administration resume ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Video Controller
A graphics card (also called a video card, display card, graphics adapter, VGA card/VGA, video adapter, display adapter, or mistakenly GPU) is an expansion card which generates a feed of output images to a display device, such as a computer monitor. Graphics cards are sometimes called discrete or dedicated graphics cards to emphasize their distinction to integrated graphics. A graphics processing unit that performs the necessary computations is the main component of a graphics card, but the acronym "GPU" is sometimes also used to refer to the graphics card as a whole. Most graphics cards are not limited to simple display output. The graphics processing unit can be used for additional processing, which reduces the load from the central processing unit. Additionally, computing platforms such as OpenCL and CUDA allow using graphics cards for general-purpose computing. Applications of general-purpose computing on graphics cards include AI training, cryptocurrency mining, and molec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Stand
''The Stand'' is a post-apocalyptic dark fantasy novel written by American author Stephen King and first published in 1978 by Doubleday. The plot centers on a deadly pandemic of weaponized influenza and its aftermath, in which the few surviving humans gather into factions that are each led by a personification of either good or evil and seem fated to clash with each other. King started writing the story in February 1975, seeking to create an epic in the spirit of ''The Lord of the Rings''. The book was difficult for him to write because of the large number of characters and storylines. In 1990, ''The Stand'' was reprinted as a ''Complete and Uncut Edition''. King restored over 400 pages from texts that were initially reduced from his original manuscript, revised the order of the chapters, shifted the novel's setting from 1980 to 10 years forward, and accordingly corrected a number of cultural references. The ''Complete and Uncut Edition'' of ''The Stand'' is Stephen King's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Westwood (computer Virus)
Westwood is a computer virus, a variant of the Jerusalem family, discovered August 1990, in Westwood, Los Angeles, California. The virus was isolated by a UCLA engineering student who discovered it in a copy of the "speed.com" program distributed with a new motherboard. Viral infection was first indicated when an early version of Microsoft Word reported internal checksum failure and failed to run. Infection Westwood was an early variant of the Jerusalem virus, which was the first DOS file infector to become common. Upon execution of an infected file, Westwood becomes memory resident. Any file of COM, EXE, or OVL types is infected upon execution, except COMMAND.COM. Symptoms A number of symptoms are associated with Westwood: *COM files executed will increase by 1,829 bytes in size; EXE and OVL files will increase by between 1,819 and 1,829 bytes. *Interrupt In digital computers, an interrupt (sometimes referred to as a trap) is a request for the processor to ''interru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frère Jacques
"Frère Jacques" (, ), also known in English as "Brother John", is a nursery rhyme of French origin. The rhyme is traditionally sung in a round. The song is about a friar who has overslept and is urged to wake up and sound the bell for the matins, the midnight or very early morning prayers for which a monk would be expected to wake. Lyrics Frère Jacques, Frère Jacques, Dormez-vous? Dormez-vous? Sonnez les matines! Sonnez les matines! Din, din, don. Din, din, don. English translation Brother Jacques, Brother Jacques, Are you sleeping? Are you sleeping? Ring/Sound he bells formatins! Ring he bells formatins! Ding, dang, dong. Ding, dang, dong. Traditional English lyrics Are you sleeping? Are you sleeping? Brother John, Brother John, Morning bells are ringing! Morning bells are ringing! Ding, dang, dong. Ding, dang, dong. The song concerns a monk's duty to ring the bell for ''matines''. Frère Jacques has apparently overslept, it is time to ring the bells for matins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Master Boot Record
A master boot record (MBR) is a special type of boot sector at the very beginning of partitioned computer mass storage devices like fixed disks or removable drives intended for use with IBM PC-compatible systems and beyond. The concept of MBRs was publicly introduced in 1983 with PC DOS 2.0. The MBR holds the information on how the disc's sectors are divided into partitions, each partition notionally containing a file system. The MBR also contains executable code to function as a loader for the installed operating system—usually by passing control over to the loader's second stage, or in conjunction with each partition's volume boot record (VBR). This MBR code is usually referred to as a boot loader. The organization of the partition table in the MBR limits the maximum addressable storage space of a partitioned disk to 2 TiB . Approaches to slightly raise this limit assuming 32-bit arithmetics or 4096-byte sectors are not officially supported, as they fatally break co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Software Bug
A software bug is an error, flaw or fault in the design, development, or operation of computer software that causes it to produce an incorrect or unexpected result, or to behave in unintended ways. The process of finding and correcting bugs is termed " debugging" and often uses formal techniques or tools to pinpoint bugs. Since the 1950s, some computer systems have been designed to deter, detect or auto-correct various computer bugs during operations. Bugs in software can arise from mistakes and errors made in interpreting and extracting users' requirements, planning a program's design, writing its source code, and from interaction with humans, hardware and programs, such as operating systems or libraries. A program with many, or serious, bugs is often described as ''buggy''. Bugs can trigger errors that may have ripple effects. The effects of bugs may be subtle, such as unintended text formatting, through to more obvious effects such as causing a program to crash, freezing th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
