How AI Search Is Recommending Endpoint Detection and Response Software: Monthly Trends

Executive Summary

CrowdStrike Falcon remains the category leader in August 2026. Its valid recommendation coverage stands at 61.0%, down 1.5 points from 62.5% in July 2026 — a move that falls within normal month-to-month variation for this brand. Microsoft Defender for Endpoint holds second position at 60.1%, putting 0.9 points between the top two brands.

The one movement the benchmark flags as significant this month belongs to Sophos Intercept X, which fell 7.9 points from 43.2% in July 2026 to 35.3% in August 2026. That single-brand decline is the primary driver of category-level movement this month; every other tracked brand remained within normal month-to-month variation on valid recommendation coverage. At the same time, CrowdStrike Falcon, Microsoft Defender for Endpoint, and SentinelOne — the category's three leaders — all recorded lower top-three placement rates this month even though their overall coverage held close to steady.

The qualified observation set grew to 536 in August 2026, up from 456 in July 2026. Against that baseline, August's picture is one of a largely stable top tier alongside a single notable decline further down the field, which in turn narrowed the gap between Sophos Intercept X and the brand just below it.

Each monthly run begins with 800 prompt-surface observations (490 unique questions in July 2026, 553 in August 2026) across the benchmark's defined AI/search surface universe. Of those, 800 mentioned a tracked brand or competitor in July 2026 and 798 in August 2026; 603 were relevant and 197 were irrelevant in July 2026, compared with 682 relevant and 116 irrelevant in August 2026. The public metrics use the 456 observations (July 2026) and 536 observations (August 2026) that survive both qualification stages.

Key Findings

Benchmark Context

The report separates the raw collection universe from the qualified analysis set. Brand-level recommendation percentages are calculated within the qualified benchmark set.

The following benchmark-level metrics summarize how many observations qualified for analysis, how many produced recommendation-shaped answers, and how the valid recommendation shortlist share moved between the two months.

Benchmark-Level Metrics

The July 2026 baseline for recommendation-shaped answer share was 46.5% (212 of 456 observations), while the August 2026 share is 46.5% (249 of 536 observations). The valid recommendation shortlist share moved from 70.4% (321 of 456) in July 2026 to 57.5% (308 of 536) in August 2026.

AI Recommendation Trend

The category's top tier is stable in leadership but shifting in placement strength

CrowdStrike Falcon leads the category in August 2026, with Microsoft Defender for Endpoint close behind and SentinelOne holding third. The one notable movement this month is concentrated in a single brand, Sophos Intercept X, whose decline stands out against an otherwise stable field.

The category-level movement this month comes primarily from Sophos Intercept X's decline of 7.9 points, the only brand the benchmark flags as a significant decliner on the primary coverage metric. Every other tracked brand remained within normal month-to-month variation, indicating the overall movement is concentrated in this one decline.

What Changed This Month

CrowdStrike Falcon

CrowdStrike Falcon's valid recommendation coverage held close to steady at the top, moving from 62.5% in July 2026 to 61.0% in August 2026, a decline of 1.5 points within normal month-to-month variation. The brand's overall presence rose slightly, with raw mention presence up from 84.9% to 85.5%.

Placement tells a different story. CrowdStrike Falcon's top-three rate moved from 59.9% in July 2026 to 45.7% in August 2026, down 14.2 points, and its rank-one rate moved from 47.1% to 31.5%, down 15.6 points. In absolute terms, the brand was recommended first in 169 of 536 qualified observations in August 2026, compared with 215 of 456 in July 2026.

Coverage held steady while top-three and rank-one placement both moved lower this month. The data does not establish why AI systems placed CrowdStrike Falcon in second or third position more often.

Highest-priority diagnostic: Which prompt patterns or competitor attributes are associated with the shift from rank one to ranks two and three for CrowdStrike Falcon?

Microsoft Defender for Endpoint

Microsoft Defender for Endpoint's overall coverage was essentially unchanged, moving from 61.4% in July 2026 to 60.1% in August 2026, down 1.3 points. Raw mention presence rose from 80.9% to 84.0%, indicating the brand appeared in answers more often.

Its top-three rate moved from 52.4% to 41.6%, down 10.8 points, while its rank-one rate moved from 4.6% to 8.8%, up 4.2 points. Microsoft Defender for Endpoint was the top recommendation in 47 of 536 observations in August 2026, up from 21 of 456 in July 2026.

The current benchmark shows a mixed placement pattern: the brand appears in the rank-one position more often this month while appearing less often across the broader top-three group. The data cannot establish why this split occurred.

Highest-priority diagnostic: Which query types produce a rank-one recommendation for Microsoft Defender for Endpoint versus those that place it outside the top three?

SentinelOne

SentinelOne's coverage moved from 58.1% in July 2026 to 56.5% in August 2026, down 1.6 points, within normal month-to-month variation. Raw mention presence rose slightly, from 75.4% to 77.0%.

Its top-three rate moved from 49.8% to 34.7%, down 15.1 points, and its rank-one rate moved from 4.4% to 2.8%. SentinelOne was recommended in the top three in 186 of 536 observations in August 2026, compared with 227 of 456 in July 2026.

The pattern for SentinelOne echoes the two leaders: coverage held close to steady while placement within the top three moved lower. The brand remains third in the category by coverage.

Highest-priority diagnostic: What is the competitive context in prompts where SentinelOne falls out of the top three, and which brands occupy those positions instead?

Sophos Intercept X

Sophos Intercept X is the benchmark's one significant decliner this month. Its coverage moved from 43.2% in July 2026 to 35.3% in August 2026, down 7.9 points — outside the range of normal month-to-month variation for this brand. Sophos Intercept X was recommended in 189 of 536 qualified observations in August 2026, down from 197 of 456 in July 2026.

Raw mention presence also declined, from 49.8% to 43.1%. Top-three and rank-one rates moved lower as well, from 8.8% to 7.6% and from 1.1% to 0.8%, respectively.

This is the one case in the category where presence and recommendation coverage moved lower together, a different pattern from the leaders, who held presence closer to steady while losing placement. The gap between Sophos Intercept X and SentinelOne, the brand above it, widened from 14.9 points to 21.2 points, while the gap to Bitdefender GravityZone, the brand below it, narrowed from 14.9 points to 6.4 points.

Highest-priority diagnostic: Which surfaces or prompt types are associated with the decline in both presence and recommendation for Sophos Intercept X?

Trend Micro

Trend Micro's decline was among the larger moves in the category but remained within normal month-to-month variation. Coverage moved from 15.3% in July 2026 to 11.2% in August 2026, down 4.1 points. The brand was recommended in 60 of 536 observations in August 2026, down from 70 of 456 in July 2026.

Presence also declined, from 24.8% to 21.1%. Top-three and rank-one rates both moved lower, from 3.3% to 2.1% and from 0.7% to 0.0%, respectively. Trend Micro recorded no rank-one recommendations in August 2026.

The movement is consistent with a broader softening across presence and recommendation strength, though the absolute counts are small enough that single-observation shifts can move the percentages meaningfully.

Highest-priority diagnostic: Where is Trend Micro losing presence, and is the decline concentrated in specific surfaces or prompt types?

Buyer-Intent Interpretation

In August 2026, all 536 qualified observations fell into the Brand Recommendation cluster. None of the qualified observations captured pricing, value, or multi-brand comparison intent. The public benchmark therefore reflects what AI systems recommend when asked directly, but it cannot yet answer how those systems frame price, value, or head-to-head comparisons between endpoint detection and response options. Those commercial questions remain open for company-level analysis.

Brand Opportunity Summary

The benchmark identifies where attention is warranted; a company-level analysis is needed to explain why.

Evidence Behind the Benchmark

The aggregate metrics are built from prompt-level observations (query, surface, recommendation outcome, rank, sentiment, and citations where exposed). Company-level analysis can go deeper into prompt, competitor, surface, and evidence patterns. Source presence is not automatically treated as proof of causation.

About This Benchmark

This report is part of the LLM Authority Index AI Market Discovery research program.

• AI Industry Market Discovery Methodology
• AI Industry Market Discovery Metrics
• AI Industry Market Discovery Standards

Report-Specific Interpretation Notes

• Small-count movement: For brands with low coverage (Cybereason, Trellix, VMware Carbon Black), small absolute changes can produce large percentage shifts. In August 2026, Cybereason's 0.6-point rise reflects 9 valid recommendations out of 536 observations.
• Qualified denominator vs raw collection: Brand-level percentages are calculated against the qualified benchmark set (536 observations in August 2026), not the raw 800 prompt-surface observations collected.
• Correlation vs. causation: Month-over-month movement identifies changes worth investigating; it does not by itself establish the cause of those changes. The benchmark measures what AI systems surface, not why they surface it.

Next Step

The Public Benchmark Shows Where a Brand Is Winning or Losing. A Company-Level Audit Shows Why.

Beneath the aggregate percentages lie the questions that matter for strategy: which high-intent prompts are won, which competitor takes the recommendation when a brand loses, what attributes AI systems associate with each option, and which external sources shape those answers. The August 2026 benchmark shows, for example, that CrowdStrike Falcon and Microsoft Defender for Endpoint are recording lower top-three placement even as their presence holds, but it does not say which prompts or sources are associated with that shift.

A company-specific AI visibility audit maps those prompt, surface, competitor, ranking, sentiment, and evidence-source patterns into a prioritized visibility strategy. The public benchmark identifies where attention is warranted; the audit explains why and what to do about it.

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