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Jerusalem (computer virus): Variants, Overview & Aliases

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…

Language: English [EN]
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Jerusalem (computer virus) topic overview

The analysis highlights Variants, Overview and Aliases as prominent areas in the source structure around Jerusalem (computer virus).

Related topics
39
Source areas
3
Connected nodes
42
Extracted relationships
8
Concept neighborhoods
18
Bridge connections
42

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

Variants · 21 topics
Overview · 16 topics
Aliases · 2 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Aliases
Arab Star · Friday 13th · Israeli
Classification
Unknown
Platform
DOS
Type
Computer virus

Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

Aliases

Variants

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How Jerusalem (computer virus) connects Entity context

The extracted context around Jerusalem (computer virus) shows recurring relationship patterns in the source. For example, Jerusalem (computer virus) → Arab Star, Friday 13th, Israeli Another extracted example is Jerusalem (computer virus) → Unknown. Use these groups to spot repeated connection types before inspecting the individual relationships.

Jerusalem (computer virus)

Top relations

Aliases · 3
Jerusalem (computer virus) → Arab Star, Friday 13th, Israeli
Classification · 1
Jerusalem (computer virus) → Unknown
Platform · 1
Jerusalem (computer virus) → DOS
Type · 1
Jerusalem (computer virus) → Computer virus

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

virus files exe com jerusalem bytes infected grow infects run 13th file friday sunday memory program original causes westwood command

Jerusalem (computer virus) relationships Subject–Predicate–Object triples

TTTA extracted 8 structured relationships around Jerusalem (computer virus). Examples in this analysis include Jerusalem (computer virus) → Aliases → Arab Star and Jerusalem (computer virus) → Aliases → Friday 13th. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
Jerusalem (computer virus)AliasesArab Star1.00infobox
Jerusalem (computer virus)AliasesFriday 13th1.00infobox
Jerusalem (computer virus)AliasesIsraeli1.00infobox
Jerusalem (computer virus)ClassificationUnknown1.00infobox
Jerusalem (computer virus)PlatformDOS1.00infobox
Jerusalem (computer virus)TypeComputer virus1.00infobox
a floppy diskinstance ofthe virus is not able to infect a file on a read-only device0.80text
Virus Bulletin used to use Westwood to test virus scanners for ability to distinguish Jerusalem variantsinstance ofOrganizations0.80text

Related concept clusters Concept neighborhoods

The concept neighborhoods around Jerusalem (computer virus) bring nearby vocabulary together. In this analysis, examples include Original, Virus and Variants. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • Jerusalem (computer virus)
    • Original
    • Virus
    • Variants
    • Resident
    • Large
    • Memory
    • Westwood
    • Friday
    • 13th
    • Files
    • Day
    • System
  • jerusalem (computer virus)
    • Original
    • Virus
    • Variants
    • Resident
    • Large
    • Memory
    • System
    • Westwood
    • Friday
    • 13th
    • Viruses
    • Also
  • hebrew university of jerusalem
    • Original
    • Virus
    • Variants
    • Resident
    • Memory
    • Westwood
    • Friday
    • 13th
    • Files
    • System
    • Viruses
    • Variant
  • command.com
    • Exe
    • Files
    • Bytes
    • Infects
    • Com
    • Command
    • Grow
    • Infect
    • Infected
    • Causes
    • Virus
    • Increase
  • bad command or file name
    • Infects
    • Com
    • Infect
    • Run
    • Exe
    • Command
    • File
    • Files
    • Friday
    • Infected
    • Delete
    • Code
  • friday the 13th
    • 13th
    • Friday
    • Delete
    • Run
    • Also
    • Resident
    • Memory
    • Interrupt
    • Virus
    • Every
    • Jerusalem
    • Executed
  • exe
    • Files
    • Grow
    • Infects
    • Infected
    • Causes
    • Increase
    • Re-infect
    • Virus
    • Infect
    • Executed
    • Also
    • Friday
  • com
    • Exe
    • Files
    • Bytes
    • Command
    • Grow
    • Infects
    • Infected
    • Causes
    • Virus
    • Increase
    • Infect
    • Friday

Connections between topic areas Semantic bridges

For Jerusalem (computer virus), one of the stronger structural bridges in this analysis connects Jerusalem (computer virus) with Variants. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
Jerusalem (computer virus) — Variants · splits 21 ⟂ 22
Jerusalem (computer virus) — Overview · splits 26 ⟂ 17
Jerusalem (computer virus) — Aliases · splits 40 ⟂ 3

Map overview Semantic statistics

Jerusalem (computer virus)

Nodes43
Edges42
Triples8
Avg. degree1.95
Density0.046512
Components1

Source & methodology

TTTA analyzes the structure around Jerusalem (computer virus) to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Variants, Overview & Aliases, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — Jerusalem (computer virus) · EN edition · Analysis: TopicsToTalkAbout

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