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Microsoft Defender Antivirus

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…

History, Features & Overview

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Topic orientation

Microsoft Defender Antivirus at a glance

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Explore the main themes, entities and connections around Microsoft Defender Antivirus. Start with the topic map, then use the sections below for research and deeper semantic analysis.

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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

Topics to explore

A structured outline of related entities, concepts and subtopics. Open any item to build a new map centered on it.

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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 this topic connects Entity context

Quick relationship hints grouped by predicate. Useful for spotting recurring semantic connections around the current entity.

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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 Word statistics

Frequent words and multi-word phrases across the lead, headings, infobox and body. Useful for terminology coverage.

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Important terminology

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

Entity relationships Subject–Predicate–Object triples

Extracted RDF-like relationships with confidence and source. The table includes structured facts and lower-confidence contextual relations.
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

Clusters of nearby vocabulary surrounding the topic. Scan them for adjacent concepts and language you may have missed.

These clusters group vocabulary that occurs around closely connected concepts in the source material.

    Connections between topic areas Semantic bridges

    Bridge nodes connect otherwise separate parts of the map. Expand a row to inspect the topic groups on each side.

    Bridges can reveal useful research angles that are easy to miss in a flat list of related terms.

    Map overview Semantic statistics

    Number of nodes, edges, triples, density and central hubs. Use it to gauge the size and connectivity of the map.

    Microsoft Defender Antivirus

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