# Attack surface management for enterprise buyers: what AI models recommend, November 2026

Gane Index, November 2026 Edition. Asked as "attack surface management platform" and as "external attack surface monitoring tool", six framings each, to fourteen models with search on, on behalf of an enterprise B2B company. Page: https://www.gane.ai/index/it/security/attack-surface-management/enterprise

**Standing:** Cortex Xpanse leads with 44% of first choices; verdict clear leader. 54 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| Rank | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | [Cortex Xpanse](https://www.gane.ai/index/it/vendors/cortex-xpanse/index.md) | 44% | 11% | 56 |
| 2 | [Microsoft Defender External Attack Surface Management](https://www.gane.ai/index/it/vendors/microsoft-defender-external-attack-surface-management/index.md) | 13% | 16% | 64 |
| 3 | [Tenable Attack Surface Management](https://www.gane.ai/index/it/vendors/tenable-attack-surface-management/index.md) | 7% | 5% | 43 |
| 4 | [CrowdStrike Falcon Exposure Management](https://www.gane.ai/index/it/vendors/crowdstrike-falcon-exposure-management/index.md) | 7% | 8% | 25 |
| 5 | [CyCognito](https://www.gane.ai/index/it/vendors/cycognito/index.md) | 6% | 17% | 52 |
| 6 | [CrowdStrike Falcon Surface](https://www.gane.ai/index/it/vendors/crowdstrike-falcon-surface/index.md) | 6% | 13% | 15 |
| 7 | [Bitsight](https://www.gane.ai/index/it/vendors/bitsight/index.md) | 4% | 5% | 19 |
| 14 | [Censys ASM](https://www.gane.ai/index/it/vendors/censys-asm/index.md) | 0% | 17% | 24 |
| 18 | [Wiz](https://www.gane.ai/index/it/vendors/wiz/index.md) | 0% | 10% | 10 |
| 19 | [Qualys External Attack Surface Management](https://www.gane.ai/index/it/vendors/qualys-external-attack-surface-management/index.md) | 0% | 25% | 16 |

Rank is by share of first choices among all 107 products named; products with the same share are tied, and the order among them carries no meaning. The table lists those with at least 10 labels.

## Each model's first choice on the direct prompt

- Claude Haiku 4.5: Bitsight; alternatives Cortex Xpanse, Synack, Tenable Attack Surface Management
- GPT-5.4 mini: CrowdStrike Falcon Exposure Management, CrowdStrike Falcon Surface; alternatives Censys ASM, IONIX, NetSPI ASM, Tenable Attack Surface Management
- Gemini 3.5 Flash: Cortex Xpanse; alternatives Axonius, CyCognito, IONIX, Microsoft Defender External Attack Surface Management
- Perplexity Sonar: Cortex Xpanse; alternatives Bitsight, CyCognito, Microsoft Defender External Attack Surface Management, Qualys External Attack Surface Management
- Grok 4.20: Cortex Xpanse, Microsoft Defender External Attack Surface Management; alternatives Censys ASM, CyCognito, Mandiant Attack Surface Management, UpGuard BreachSight
- Mistral Small: Cortex Xpanse; alternatives Microsoft Defender External Attack Surface Management, Synack, UpGuard BreachSight
- DeepSeek V4 Flash: Cortex Xpanse, CrowdStrike Falcon Exposure Management; alternatives CyCognito, Microsoft Defender External Attack Surface Management, Qualys External Attack Surface Management, Tenable Attack Surface Management
- Llama 4 Maverick: Cortex Xpanse; alternatives CrowdStrike, CyCognito, Cyble Vision, Microsoft Defender External Attack Surface Management
- Qwen 3.7 Flash: Cortex Xpanse; alternatives CyCognito, Microsoft Defender External Attack Surface Management, Zafran
- Kimi K2: CrowdStrike Falcon Exposure Management; alternatives CyCognito, Microsoft Defender External Attack Surface Management, Microsoft Threat Intelligence, Palo Alto Networks
- GLM 4.7 FlashX: Cortex Xpanse, CyCognito, Tenable Attack Surface Management; alternatives Check Point Exposure Management CAASM, CrowdStrike Falcon Exposure Management, Microsoft Defender External Attack Surface Management
- MiniMax M2.5: Cortex Xpanse, CrowdStrike Falcon Exposure Management, Microsoft Defender External Attack Surface Management; alternatives Censys ASM, CyCognito, Tenable Attack Surface Management
- GPT-6 Luna: Cortex Xpanse; alternatives Censys ASM, Microsoft Defender External Attack Surface Management, Tenable Attack Surface Management
- Muse Glimmer 30B: Bitsight; alternatives Cortex Xpanse, CyCognito, Microsoft Defender External Attack Surface Management, Zafran

## Sources the answers cite

79 of 84 answers came back with a source list, from 14 of 14 models. Sites named in the most answers:

- upguard.com: 39 answers, 45 citations
- cyble.com: 34 answers, 34 citations
- paloaltonetworks.com: 26 answers, 37 citations
- checkpoint.com: 24 answers, 24 citations
- securityboulevard.com: 19 answers, 21 citations
- microsoft.com: 18 answers, 30 citations
- cycognito.com: 18 answers, 29 citations
- g2.com: 18 answers, 22 citations

Pages named in the most answers:

- https://cyble.com/knowledge-hub/top-attack-surface-management-services (34 answers)
- https://upguard.com/blog/attack-surface-management-vendors-compared (32 answers)
- https://checkpoint.com/cyber-hub/tools-vendors/best-attack-surface-management-platforms-2026 (23 answers)
- https://vcso.ai/learn/best-attack-surface-management-tools-2026 (18 answers)
- https://synack.com/blog/best-attack-surface-management-tools (17 answers)
- https://cybersectools.com/resources/shortlists/best-attack-surface-tools (14 answers)
- https://bitsight.com/guides/best-external-attack-surface-management-platforms-for-global-enterprises (13 answers)
- https://securityboulevard.com/2024/09/10-best-attack-surface-management-tools (13 answers)
- https://attaxion.com/top-external-attack-surface-management-vendors (12 answers)
- https://csoonline.com/article/574797/9-attack-surface-discovery-and-management-tools.html (11 answers)

## Warned against

- Microsoft Defender External Attack Surface Management: 10 of 64 labels negative. "NOT Recommended for Predictable Costs" (MiniMax M2.5, budget prompt)
- CyCognito: 9 of 52 labels negative. "CyCognito is mentioned as a strong tool for large enterprises with distributed external footprints and acquisition complexity, but it is also noted that it has a limited focus on external visibility and no internal context." (Llama 4 Maverick, negative prompt)
- Cortex Xpanse: 6 of 56 labels negative. "Caution: Adversary Intelligence Coverage. ... it can be "challenging to confirm absolute coverage and penetration of the Dark Web" compared to competitors." (GLM 4.7 FlashX, negative prompt)
- Censys ASM: 4 of 24 labels negative. "Enterprises should be cautious about or avoid Censys ASM due to reported issues with attribution and effectiveness." (Mistral Small, negative prompt)

## Movement since October 2026

Floor: 11 points of share, measured on the calibration repeat.
Same leader: Cortex Xpanse at 44%.

- Cortex Xpanse: 29% to 44%, +15. Cleared the floor by 4 points · rank 1 of 107, unchanged.
- CrowdStrike Falcon Exposure Management: 2% to 7%, +5. Inside the floor by 6 points · rank 9 → 4 of 107.
- Wiz: 4% to 0%, −4. Inside the floor by 7 points · rank 7 → 18 of 107.
- Microsoft Defender External Attack Surface Management: 16% to 13%, −3. Inside the floor by 8 points · rank 2 of 107, unchanged.
- Bitsight: 7% to 4%, −3. Inside the floor by 8 points · rank 4 → 7 of 107.
- Tenable Attack Surface Management: 5% to 7%, +2. Inside the floor by 9 points · rank 5 → 3 of 107.
- CrowdStrike Falcon Surface: 4% to 6%, +2. Inside the floor by 9 points · rank 6 of 107, unchanged.
- Qualys External Attack Surface Management: 2% to 0%, −2. Inside the floor by 9 points · rank 11 → 19 of 107.
- CyCognito: 7% to 6%, −1. Inside the floor by 10 points · rank 3 → 5 of 107.
- Censys ASM: 0% to 0%, ±0. Inside the floor by 11 points · rank 87 → 14 of 107.

## 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.