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Microsoft Defender Antivirus: History, Features & Overview

Microsoft Defender Antivirus (formerly Windows Defender) is an antivirus software component for Microsoft Windows and mobile. It was first released as a downloadable free anti-spyware program for Windows XP and was shipped with Windows Vista and Windows 7. It has evolved into a full antivirus program, replacing Microsoft Security Essentials in…

Language: English [EN]
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Microsoft Defender Antivirus topic overview

The analysis highlights History, Features and Overview as prominent areas in the source structure around Microsoft Defender Antivirus.

Related topics
77
Source areas
6
Connected nodes
83
Extracted relationships
53
Concept neighborhoods
47
Bridge connections
83

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.

Overview · 36 topics
History · 21 topics
Features · 11 topics
Mitigated security vulnerability · 5 topics
Reviews · 3 topics
Criticisms · 1 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.

Android
1.0.9014.0101 / June 19, 2026; 2 months ago (2026-06-19)
Developer
Microsoft
iOS[a]
1.1.7802.0101 / June 11, 2026; 2 months ago (2026-06-11)
License
Proprietary
Operating system
Windows 7 SP1+ · Windows Server 2008 R2 SP1+ · Android 11+ · iOS 17+[a]
Original author
Microsoft

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

Features

History

Mitigated security vulnerability

Reviews

Criticisms

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 Microsoft Defender Antivirus connects Entity context

The extracted context around Microsoft Defender Antivirus shows recurring relationship patterns in the source. For example, Microsoft Defender Antivirus → As, Cloud AppsMicrosoft Defender Vulnerability, CloudMicrosoft Defender, Defender, EndpointMicrosoft Defender, IdentityMicrosoft Defender, Individuals, ManagementMicrosoft Defender, Microsoft Defender, Microsoft Defender XDR, Office, Threat IntelligenceMicrosoft Defender Another extracted example is Microsoft Defender Antivirus → In Windows, In Windows Vista, It, Microsoft, Microsoft Security Essentials, MSE, Upon, Windows, Windows Defender, Windows Vista. Use these groups to spot repeated connection types before inspecting the individual relationships.

Microsoft Defender Antivirus

Top relations

related to Microsoft Defender brand · 12
Microsoft Defender Antivirus → As, Cloud AppsMicrosoft Defender Vulnerability, CloudMicrosoft Defender, Defender, EndpointMicrosoft Defender, IdentityMicrosoft Defender, Individuals, ManagementMicrosoft Defender, Microsoft Defender, Microsoft Defender XDR, Office, Threat IntelligenceMicrosoft Defender
related to Conversion to full antivirus · 10
Microsoft Defender Antivirus → In Windows, In Windows Vista, It, Microsoft, Microsoft Security Essentials, MSE, Upon, Windows, Windows Defender, Windows Vista
related to Microsoft Defender for Individuals · 9
Microsoft Defender Antivirus → Android, Individuals, June, Mac OS, Microsoft, Microsoft Defender, Microsoft's, On Windows, Windows
related to Features · 5
Microsoft Defender Antivirus → Anniversary Update, In Windows, Windows, Windows Defender, Windows Defender Security Center
Operating system · 4
Microsoft Defender Antivirus → Android 11+, iOS 17+[a], Windows 7 SP1+, Windows Server 2008 R2 SP1+
Platform · 3
Microsoft Defender Antivirus → May 2026 Update (4.18.26050.15) / June 22, 2026; 2 months ago (2026-06-22), PlatformMay 2026 Update (4.18.26050.15) / June 22, 2026; 2 months ago (2026-06-22)Windows appFebruary 2026 Update (102.2602.23002) / June 3, 2026; 2 months ago (2026-06-03)Andro…, Windows
Android · 1
Microsoft Defender Antivirus → 1.0.9014.0101 / June 19, 2026; 2 months ago (2026-06-19)
Developer · 1
Microsoft Defender Antivirus → Microsoft
iOS[a] · 1
Microsoft Defender Antivirus → 1.1.7802.0101 / June 11, 2026; 2 months ago (2026-06-11)
License · 1
Microsoft Defender Antivirus → Proprietary

Important terminology

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

Important terminology

windows microsoft defender antivirus security protection released also software beta system 10 malware update user program application essentials users first

Microsoft Defender Antivirus relationships Subject–Predicate–Object triples

TTTA extracted 53 structured relationships around Microsoft Defender Antivirus. Examples in this analysis include Microsoft Defender Antivirus → Android → 1.0.9014.0101 / June 19, 2026; 2 months ago (2026-06-19) and Microsoft Defender Antivirus → Developer → Microsoft. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
Microsoft Defender AntivirusAndroid1.0.9014.0101 / June 19, 2026; 2 months ago (2026-06-19)1.00infobox
Microsoft Defender AntivirusDeveloperMicrosoft1.00infobox
Microsoft Defender AntivirusiOS[a]1.1.7802.0101 / June 11, 2026; 2 months ago (2026-06-11)1.00infobox
Microsoft Defender AntivirusLicenseProprietary1.00infobox
Microsoft Defender AntivirusOperating systemWindows 7 SP1+1.00infobox
Microsoft Defender AntivirusOperating systemWindows Server 2008 R2 SP1+1.00infobox
Microsoft Defender AntivirusOperating systemAndroid 11+1.00infobox
Microsoft Defender AntivirusOperating systemiOS 17+[a]1.00infobox
Microsoft Defender AntivirusOriginal authorMicrosoft1.00infobox
Microsoft Defender AntivirusOther namesWindows Defender Windows Security1.00infobox
Microsoft Defender AntivirusPlatformPlatformMay 2026 Update (4.18.26050.15) / June 22, 2026; 2 months ago (2026-06-22)Windows appFebruary 2026 Update (102.2602.23002) / June 3, 2026; 2 months ago (2026-06-03)Andro…1.00infobox
Microsoft Defender AntivirusPlatformMay 2026 Update (4.18.26050.15) / June 22, 2026; 2 months ago (2026-06-22)1.00infobox
Microsoft Defender AntivirusPlatformWindows1.00infobox
Microsoft Defender AntivirusPredecessorMicrosoft Security Essentials1.00infobox
Microsoft Defender AntivirusTypeAntivirus software, personal firewall, parental control, intrusion prevention, email filtering and anti-phishing1.00infobox
Microsoft Defender AntivirusWindows appFebruary 2026 Update (102.2602.23002) / June 3, 2026; 2 months ago (2026-06-03)1.00infobox

Related concept clusters Concept neighborhoods

The concept neighborhoods around Microsoft Defender Antivirus bring nearby vocabulary together. In this analysis, examples include Microsoft, Windows and Security. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • Microsoft Defender Antivirus
    • Microsoft
    • Windows
    • Security
    • Antivirus
    • Defender
    • Essentials
    • Protection
    • Also
    • Announced
    • Guard
    • Versions
    • Antispyware
  • microsoft defender antivirus
    • Windows
    • Microsoft
    • Essentials
    • Protection
    • Security
    • Antivirus
    • Defender
    • Also
    • System
    • Announced
    • Guard
    • Versions
  • antivirus software
    • Explorer
    • Essentials
    • Operating
    • Antispyware
    • Microsoft
    • Windows
    • Security
    • Defender
    • Malicious
    • Malware
    • Also
    • Protection
  • microsoft windows
    • Defender
    • Microsoft
    • Windows
    • Security
    • Antivirus
    • System
    • Essentials
    • Protection
    • Software
    • Also
    • Announced
    • Operating
  • windows xp
    • Defender
    • Microsoft
    • Security
    • Antivirus
    • System
    • Protection
    • Essentials
    • Software
    • Operating
    • Versions
    • Vista
    • Beta
  • windows vista
    • Defender
    • Microsoft
    • Security
    • Control
    • Antivirus
    • System
    • Essentials
    • Protection
    • Software
    • Operating
    • Versions
    • Vista
  • windows 7
    • Defender
    • Microsoft
    • Security
    • Antivirus
    • System
    • Protection
    • Essentials
    • Software
    • Operating
    • Versions
    • Vista
    • Beta
  • microsoft security essentials
    • Windows
    • Security
    • Vista
    • Settings
    • Protection
    • Essentials
    • Microsoft
    • Program
    • Operating
    • Also
    • Software
    • System

Connections between topic areas Semantic bridges

For Microsoft Defender Antivirus, one of the stronger structural bridges in this analysis connects Microsoft Defender Antivirus with Overview. 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
Microsoft Defender AntivirusOverview · splits 47 ⟂ 37
Microsoft Defender AntivirusHistory · splits 62 ⟂ 22
Microsoft Defender AntivirusFeatures · splits 72 ⟂ 12
Microsoft Defender AntivirusMitigated security vulnerability · splits 78 ⟂ 6
Microsoft Defender AntivirusReviews · splits 80 ⟂ 4

Map overview Semantic statistics

Microsoft Defender Antivirus

Nodes84
Edges83
Triples53
Avg. degree1.98
Density0.02381
Components1

Source & methodology

TTTA analyzes the structure around Microsoft Defender Antivirus to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as History, Features & Overview, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — Microsoft Defender Antivirus · EN edition · Analysis: TopicsToTalkAbout

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