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Malwarebytes vs Microsoft Defender

AI visibility head-to-head, Antivirus Software — run #89 (2026-08-01). Microsoft Defender leads with statistical confidence (non-overlapping 95% CIs).

Malwarebytes

38.0
95% CI35.1–40.6
Industry rank#3
openai38.2
anthropic33.1
google43.4
perplexity20.3
vs

Microsoft Defender · leads

48.3
95% CI45.5–50.6
Industry rank#1
openai49.5
anthropic46.8
google47.3
perplexity38.1

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 typeMalwarebytesMicrosoft Defender
Recommendations
“What's the best option for me?”
52%48%
Comparisons
“How do the top options stack up?”
10%18%
Ready to buy
“Which one should I actually get?”
34%45%
Problem-solving
“I have this problem — what fixes it?”
53%56%
Informational
“How does this kind of product work?”
21%50%

Bold marks the higher point estimate; the headline verdict above uses non-overlapping confidence intervals. Methodology

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