Microsoft Defender vs Norton
AI visibility head-to-head, Antivirus Software — run #58 (2026-07-13). Microsoft Defender leads with statistical confidence (non-overlapping 95% CIs).
Microsoft Defender · leads
49.8
95% CI46.9–52.4
Industry rank#1
perplexity45.2
google47.8
openai50.8
anthropic49.0
vs
By question type
Share of answers mentioning each brand, split by the intent behind the question. The panel asks 10 prompts of each type, so a lead here shows where one brand wins — not just that it wins overall.
| Question type | Microsoft Defender | Norton |
|---|---|---|
| Recommendations “What's the best option for me?” | 50% | 59% |
| Comparisons “How do the top options stack up?” | 17% | 27% |
| Ready to buy “Which one should I actually get?” | 53% | 65% |
| Problem-solving “I have this problem — what fixes it?” | 62% | 42% |
| Informational “How does this kind of product work?” | 56% | 21% |
Bold marks the higher point estimate; the headline verdict above uses non-overlapping confidence intervals. Methodology