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Index › Products › Microsoft Defender External Attack Surface Management · October 2026 Edition
Microsoft Defender · 1 category · Ranked

Microsoft Defender External Attack Surface Management

116Judge labels
15First choices
26Negative labels
14 / 14Models named it
1Category
October 2026 Edition. Every number here is derived from the raw labels under vendor table v2026-10.8, every buyer segment counted.
Best standing
16% in ASM for enterprise buyers
Rank 3 of 100 in the mid-market standingaccepted challenger
1 of 14 models made it the first choice on the direct prompt; 18% of its 39 labels there were negative.
What the models named instead of Microsoft Defender External Attack Surface Management →
By buyer segmentStrongest at enterprise.
In asm · each standing computed within its segment · bars are 0 to 100 · the accent bar is the product's own best reading

Standing by category

Every category where a model named Microsoft Defender External Attack Surface Management for a mid-market B2B company. Share is first choices across the direct, paraphrase, budget and scale prompts; rank is within every product named in that category.
CategoryFunctionShareRankNegative rateLabelsQuadrantSince September 2026
Attack surface managementSecurity operations10%3 of 10018%39accepted challenger▲+5Since September 2026: 2% → 7%, +5 points. Inside the 11-point floor: within noise. Read over the models both editions asked.

Movement

Since September 2026, Microsoft Defender External Attack Surface Management held within the floor in its one category: no change cleared 11 points.

Best category · ASM · by segment

Small business▼−2Since September 2026: 2% → 0%, −2 points. Inside the 11-point floor: within noise. Read over the models both editions asked.
0%from 2% in September 2026
Inside the floor by 9 pointsRank 14 → 20 of 93
Mid-market▲+5Since September 2026: 2% → 7%, +5 points. Inside the 11-point floor: within noise. Read over the models both editions asked.
7%from 2% in September 2026
Inside the floor by 6 pointsRank 5 → 3 of 98
Enterprise▼−4Since September 2026: 21% → 17%, −4 points. Inside the 11-point floor: within noise. Read over the models both editions asked.
17%from 21% in September 2026
Inside the floor by 7 pointsRank 1 → 2 of 81

All categories · Mid-market

CategorySeptember 2026NowChangeReadingRank
ASM2%7%▲+5Since September 2026: 2% → 7%, +5 points. Inside the 11-point floor: within noise. Read over the models both editions asked.Within noiseRank 5 → 3 of 100

Shares here are read over the models both editions asked, so they can differ by a point or two from the standing above, which counts every model in this edition.

The floor is 11 points of share, measured: how far the models move a leader on their own when the same questions are asked twice with nothing changed. A larger change is movement; a smaller one is noise, and both are shown. Movement is read over the twelve models both editions asked; GPT-6 Luna, Muse Glimmer 30B joined this edition and are in the standing but not yet in the comparison. How the floor is measured · The editions

By model

How each model treated Microsoft Defender External Attack Surface Management across every prompt where it was named for a mid-market B2B company. Fourteen models, six prompts per category.
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ModelFirst choiceAlternativeMentionNegativeLabels
Claude Haiku 4.500202
GPT-5.4 mini11002
Gemini 3.5 Flash02024
Perplexity Sonar03014
Grok 4.2000011
Mistral Small01001
DeepSeek V4 Flash13015
Llama 4 Maverick00101
Qwen 3.7 Flash01012
Kimi K205106
GLM 4.7 FlashX11013
MiniMax M2.501102
GPT-6 Luna21003
Muse Glimmer 30B01203

By framing

Which of the six questions produced the naming. By model says how often; this says asked what. The first-choice count on the right carries the marks of the models that produced it.
FramingLabels by classFirst choices
Direct23 labels2
Paraphrase19 labels3
Comparative25 labels3not counted in share
Budget-constrained19 labels9
Scale-constrained7 labels1
Negative23 labelsNone
First choiceAlternativeMentionNegative116 labels in all, every segment counted; 15 of the 18 first choices count toward share, since the comparative and negative framings do not. The bar is one segment per label class, to scale within the framing.

What the models said for it

Verbatim evidence the judge attached to positive labels.

“the best attack surface management (ASM) platform is Microsoft Defender External Attack Surface Management (EASM) if you already use Microsoft 365/E5” GLM 4.7 FlashX · ASM · budget prompt · first choice
“I'd generally recommend Microsoft Defender External Attack Surface Management as the first tool to evaluate” GPT-5.4 mini · ASM · paraphrase prompt · first choice
“I'd start with Microsoft Defender EASM—especially if you already use Azure or Microsoft security tools.” GPT-6 Luna · ASM · direct prompt · first choice
“CyCognito, CrowdStrike Falcon Surface, and Microsoft Defender EASM are strong starting points” DeepSeek V4 Flash · ASM · scale prompt · first choice

And against it

Verbatim evidence attached to negative labels. A warning on a product with few labels is a warning; on a product with many, it is one voice among them.

“Microsoft’s native ASM is described as tightly integrated with Defender and Azure, so it may be less suitable if you need broad multi-cloud, SaaS, or heterogeneous coverage” Perplexity Sonar · ASM · negative prompt · soft negative
“integrates deeply with Microsoft/Sentinel/Defender; limited third-party integration for non-Microsoft environments.” DeepSeek V4 Flash · ASM · negative prompt · soft negative
“while Microsoft Defender EASM is excellent at passive discovery, its active vulnerability scanning can be lacking” Gemini 3.5 Flash · ASM · negative prompt · soft negative
“High false positives requiring dedicated triage; complex setup (typical Microsoft); needs existing license” Grok 4.20 · ASM · negative prompt · soft negative

Named alongside

The products named in the same answers as Microsoft Defender External Attack Surface Management, over the 116 answers that named it. Took the first choice instead counts the answers where the other product was the first choice and Microsoft Defender External Attack Surface Management was named but was not.
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ProductSame answerTook the first choice insteadHead to head
Cortex Xpanse71 of 11618Not among the top eight
Censys ASM43 of 1161Not among the top eight
Bitsight28 of 1164Not among the top eight
Wiz25 of 1164Not among the top eight
A head-to-head page exists where both products are among a category's top eight. The other rows are the same fact without a page behind them, so they link to the product instead.

What carried it into the answer

The sites and pages cited by the answers that named Microsoft Defender External Attack Surface Management. A fact about retrieval, not a lever on the model.

Citations exist only for the models that return a source list, five of the fourteen in this edition, so these counts come from 116 of the 116 answers that named Microsoft Defender External Attack Surface Management and are not a share of its labels.

Domains cited

synack.com58
paloaltonetworks.com57
guideflow.com52
upguard.com48
wiz.io45
cycognito.com37
gartner.com36
g2.com35
attaxion.com34
heimdalsecurity.com33

435 of the 435 domain citations in answers naming Microsoft Defender External Attack Surface Management came from somebody else's page.

Pages cited

Pages are listed as the models cited them.

Search and answers

Where Microsoft Defender External Attack Surface Management stands in Google search beside where it stands in the models' answers.
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In search

Google, US estimates
Searches for its name, Google
140 a month (“microsoft defender external attack surface management”)
AI search demand for its name, est.
5 a month
Its own site
It sits on Microsoft Defender's site (microsoft.com), so there are no site figures for it alone

In answers

This edition
Share of first choices
10%
rank 3 of 100 in ASM
Segment leader
49%
Intruder
First choices
15 across its categories
Named in
116 answers
Its own site cited
in 116 of the answers that named it

Search figures are US estimates from DataForSEO, read September 28, 2026; AI search demand is its modeled, directional estimate, not a count of queries to any assistant. The answers are this edition's. Two measurements side by side: neither is read as the cause of the other.

Names read as Microsoft Defender External Attack Surface Management

What the judge wrote, as written, with how often. The vendor table decides that these count as Microsoft Defender External Attack Surface Management; a claim can dispute any of them.
Microsoft Defender EASM 26Microsoft Defender External Attack Surface Management (EASM) 4Defender EASM 1Microsoft 1

Follow Microsoft Defender External Attack Surface Management

An email the morning each edition publishes: where this product moved, where it held, and by how much against the noise floor. One address, confirmed by a click; a stop link in every email.

Already following? Everything you follow, with a stop for each.

The company

Microsoft Defender is the company behind Microsoft Defender External Attack Surface Management.
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Is this your product?

Claim this page

Claiming is free and changes nothing in the data. A claimed page shows a verified contact who is told when each edition publishes and when Microsoft Defender External Attack Surface Management's standing changes by more than the noise floor; the right to propose corrections to the vendor table, meaning names the judge wrote that should or should not read as Microsoft Defender External Attack Surface Management, applied by version and listed in the change log; and a one-line description supplied by the vendor and marked as such.

What a new claim receivesHide what a new claim receives

A new claim receives the current edition's vendor brief for Microsoft Defender External Attack Surface Management by email, built from the raw record of the edition. It shows:

  • where Microsoft Defender External Attack Surface Management is named, by buyer and by framing, and which cells hold its first choices;
  • the claims the models make when they name it, ranked, with the strongest and the weakest quoted;
  • its vocabulary against the segment leader's, and the pages the models cited;
  • who was chosen in the answers that did not name Microsoft Defender External Attack Surface Management, and every reason the record gives;
  • a battlecard for each top rival: the head-to-head split, why they win, and the reservation quoted against them;
  • one page of published figures cleared to show a buyer.
The subscriber app

A verification link goes to your work email; an address at microsoft.com is approved on the spot, any other is reviewed by hand. Your email is never published. Claiming gives no say over labels, shares, verdicts or which quotes appear.

Badges

Wins only: a badge exists where Microsoft Defender External Attack Surface Management is ranked in a category's top three this edition. Three sizes, one file each, light and dark; the code is under each.
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Microsoft Defender External Attack Surface Management is among the products AI models recommend first in Attack surface management this edition. Each badge says so in the buyer's words, names the edition, and links to the standing. The next edition issues a new badge; this one stays true as a record of October 2026.

Wide · 320 × 104 Website, beside other badges
Among AI models' top three in Attack surface management, October 2026 Edition, IT AI Recommendation Index
Show the code
<a href="https://it-ai-index.com/security/attack-surface-management/"><img src="https://it-ai-index.com/badges/2026-10/microsoft-defender-external-attack-surface-management--attack-surface-management-wide.svg" alt="Among AI models' top three in Attack surface management, October 2026 Edition, IT AI Recommendation Index" width="320" height="104"></a>

Copy the code as it is. The link is part of the badge: it points at the Attack surface management standing, where the claim can be checked.

Square · 240 × 240 LinkedIn, slides
Among AI models' top three in Attack surface management, October 2026 Edition, IT AI Recommendation Index
Show the code
<a href="https://it-ai-index.com/security/attack-surface-management/"><img src="https://it-ai-index.com/badges/2026-10/microsoft-defender-external-attack-surface-management--attack-surface-management-square.svg" alt="Among AI models' top three in Attack surface management, October 2026 Edition, IT AI Recommendation Index" width="240" height="240"></a>

Copy the code as it is. The link is part of the badge: it points at the Attack surface management standing, where the claim can be checked.

Compact · 200 × 56 Email signature, footer
Among AI models' top three in Attack surface management, October 2026 Edition, IT AI Recommendation Index
Show the code
<a href="https://it-ai-index.com/security/attack-surface-management/"><img src="https://it-ai-index.com/badges/2026-10/microsoft-defender-external-attack-surface-management--attack-surface-management-compact.svg" alt="Among AI models' top three in Attack surface management, October 2026 Edition, IT AI Recommendation Index" width="200" height="56"></a>

Copy the code as it is. The link is part of the badge: it points at the Attack surface management standing, where the claim can be checked.

Badges read on light and dark pages. Alt text carries the claim, the category, the edition and the index, so it stays a citation where the image does not load.