---
type: entity
title: Windows Defender
tags: [antivirus, microsoft, security]
related: [bsi-it-grundschutz]
created: 2026-07-01
updated: 2026-07-01
sources: ["output/rz_uni_greifswald_de_support_dokumentation_it_informationssicherheit_antivirenma.md"]
---

# Windows Defender

**Windows Defender** is the built-in antivirus and security software integrated into Microsoft Windows 10 and 11.

According to the [[universitatsrechenzentrum-urz]], Windows Defender is automatically activated and fulfills all modern requirements for virus protection, as validated by independent testing bodies such as **AV-TEST**. Consequently, the URZ considers the use of third-party antivirus products unnecessary for Windows 10/11 systems.

Users are advised to perform regular updates via **Windows Update** to ensure the system remains protected against emerging threats.