# Microsoft Defender Antivirus: how AI models rank it, November 2026

Gane Index, November 2026 Edition. Named in 2 judge labels across 1 category by 2 of 14 models. Page: https://www.gane.ai/index/it/vendors/microsoft-defender-antivirus

## Standing by category

| Category | Share | Rank | Negative rate | Labels |
|---|---|---|---|---|
| [Client-side protection](https://www.gane.ai/index/it/security/client-side-protection/index.md) | 2% | 11 | 0% | 2 |

## What the models said for it

- "For endpoint/device protection, use the Microsoft Defender already installed on your Windows PCs." (Kimi K2, Client-side protection)
- "If the budget is near zero, start with the built-in protections—such as Microsoft Defender Antivirus on Windows" (GPT-6 Luna, Client-side protection)

## By model

| Model | First choice | Alternative | Mention | Warning | Labels |
|---|---|---|---|---|---|
| Claude Haiku 4.5 | 0 | 0 | 0 | 0 | 0 |
| GPT-5.4 mini | 0 | 0 | 0 | 0 | 0 |
| Gemini 3.5 Flash | 0 | 0 | 0 | 0 | 0 |
| Perplexity Sonar | 0 | 0 | 0 | 0 | 0 |
| Grok 4.20 | 0 | 0 | 0 | 0 | 0 |
| Mistral Small | 0 | 0 | 0 | 0 | 0 |
| DeepSeek V4 Flash | 0 | 0 | 0 | 0 | 0 |
| Llama 4 Maverick | 0 | 0 | 0 | 0 | 0 |
| Qwen 3.7 Flash | 0 | 0 | 0 | 0 | 0 |
| Kimi K2 | 1 | 0 | 0 | 0 | 1 |
| GLM 4.7 FlashX | 0 | 0 | 0 | 0 | 0 |
| MiniMax M2.5 | 0 | 0 | 0 | 0 | 0 |
| GPT-6 Luna | 0 | 1 | 0 | 0 | 1 |
| Muse Glimmer 30B | 0 | 0 | 0 | 0 | 0 |

## Sources returned with these answers

The sites and pages cited by the answers that named Microsoft Defender Antivirus, from 3 of the 3 answers that named it (only the models that return a source list).

### Domains cited

- microsoft.com: 3 (its own site)
- gracker.ai: 2
- kurums.com: 2
- softwareadvice.com: 2
- sourceforge.net: 2
- akamai.com: 1
- cisa.gov: 1
- cloudflare.com: 1
- community.spiceworks.com: 1
- developers.cloudflare.com: 1

### Pages cited

- https://kurums.com/free-business-antivirus-security: 2
- https://microsoft.com/en-us/security/business/endpoint-security/microsoft-defender-business: 2
- https://softwareadvice.com/category/4777-endpoint-protection/small-business: 2
- https://akamai.com/products/client-side-protection-compliance: 1
- https://cisa.gov/resources-tools/resources/no-cost-cybersecurity-services-and-tools: 1
- https://cloudflare.com/plans/faq: 1
- https://cloudflare.com/product/page-shield: 1
- https://cloudflare.com/resources/assets/slt3lc6tev37/5H4Jmd8JozS8DRWzltGabE/c7fcd40203c39c5b96eb645a6940a0a5/Page_Shield_Product_Brief.pdf: 1

## In its own words

What Microsoft Defender Antivirus's own pages state, read 2026-10-06. Stated by the vendor, not checked by the index.

- Positioning: Професионална, винаги включена защита за вас и данните и устройствата на вашето семейство – за работа или личен живот. (https://www.microsoft.com/bg-bg/microsoft-365/microsoft-defender-for-individuals)
- For: individuals and families (https://www.microsoft.com/bg-bg/microsoft-365/microsoft-defender-for-individuals)
- Price stated: Microsoft 365 Personal 99,99 € /година; Microsoft 365 Family 124,99 € /година; Microsoft 365 Premium 209,99 € /година (https://www.microsoft.com/bg-bg/microsoft-365/microsoft-defender-for-individuals)
- Starting price: 99,99 € (https://www.microsoft.com/bg-bg/microsoft-365/microsoft-defender-for-individuals)
- Free plan or trial: Изпробвайте безплатно (https://www.microsoft.com/bg-bg/microsoft-365/microsoft-defender-for-individuals)
- Customers named: COFCO International

## Record

- Method: https://www.gane.ai/index/it/methodology
- License: CC BY 4.0. Cite as Gane Index, November 2026 Edition, www.gane.ai/index/it.