# Attack surface management for small business buyers: what AI models recommend, September 2026

Gane Index, September 2026 Edition. Asked as "attack surface management platform" and as "external attack surface monitoring tool", six framings each, to twelve models with search on, on behalf of a small B2B company. Page: https://www.gane.ai/index/it/security/attack-surface-management/2026-09/smb

This is the permanent record of the September 2026 Edition, published September 17, 2026 and superseded since. The current standing: https://www.gane.ai/index/it/security/attack-surface-management/smb/index.md

**Standing:** Intruder leads with 52% of first choices; verdict clear leader. 52 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| Rank | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | [Intruder](https://www.gane.ai/index/it/vendors/intruder/index.md) | 52% | 0% | 53 |
| 2 | [runZero](https://www.gane.ai/index/it/vendors/runzero/index.md) | 10% | 0% | 11 |
| 3 | [Detectify](https://www.gane.ai/index/it/vendors/detectify/index.md) | 6% | 14% | 43 |
| 5 | bspeka | 4% | 0% | 10 |
| 6 | [UpGuard BreachSight](https://www.gane.ai/index/it/vendors/upguard-breachsight/index.md) | 4% | 19% | 16 |
| 7 | [Attaxion](https://www.gane.ai/index/it/vendors/attaxion/index.md) | 2% | 0% | 20 |
| 8 | [Aikido Security](https://www.gane.ai/index/it/vendors/aikido-security/index.md) | 2% | 8% | 13 |
| 10 | [Censys ASM](https://www.gane.ai/index/it/vendors/censys-asm/index.md) | 2% | 33% | 15 |
| 14 | [Microsoft Defender External Attack Surface Management](https://www.gane.ai/index/it/vendors/microsoft-defender-external-attack-surface-management/index.md) | 2% | 50% | 18 |
| 15 | [Tenable Attack Surface Management](https://www.gane.ai/index/it/vendors/tenable-attack-surface-management/index.md) | 2% | 82% | 11 |
| 16 | [CyCognito](https://www.gane.ai/index/it/vendors/cycognito/index.md) | 2% | 77% | 22 |
| 89 | [Cortex Xpanse](https://www.gane.ai/index/it/vendors/cortex-xpanse/index.md) | 0% | 95% | 22 |

Rank is by share of first choices among all 89 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: HostedScan, Intruder; alternatives Attaxion, Detectify, Microsoft Defender External Attack Surface Management
- GPT-5.4 mini: Hackal, WatchGate; alternatives Vulmon Recon, wye scan
- Gemini 3.5 Flash: Intruder; alternatives Detectify, bspeka
- Perplexity Sonar: Detectify; alternatives Intruder, Microsoft Defender External Attack Surface Management
- Grok 4.20: Intruder; alternatives Detectify, bspeka, runZero
- Mistral Small: Intruder; alternatives Aikido Security, Detectify
- DeepSeek V4 Flash: Intruder; alternatives Detectify, runZero
- Llama 4 Maverick: no first choice
- Qwen 3.7 Flash: Intruder; alternatives Aikido Security, Microsoft Defender External Attack Surface Management, UpGuard BreachSight, bspeka
- Kimi K2: Attaxion, Intruder; alternatives Attack Surface Center, PortWarden
- GLM 4.7 FlashX: Intruder; alternatives Hexiosec, ManageEngine Vulnerability Manager Plus
- MiniMax M2.5: Intruder, UpGuard BreachSight

## Sources the answers cite

66 of 72 answers came back with a source list, from 12 of 12 models. Sites named in the most answers:

- synack.com: 45 answers, 46 citations
- g2.com: 43 answers, 81 citations
- upguard.com: 42 answers, 46 citations
- cyberbench.net: 38 answers, 38 citations
- attaxion.com: 30 answers, 39 citations
- bspeka.com: 19 answers, 31 citations
- guideflow.com: 19 answers, 19 citations
- intruder.io: 18 answers, 27 citations

Pages named in the most answers:

- https://synack.com/blog/best-attack-surface-management-tools (45 answers)
- https://upguard.com/blog/best-attack-surface-management-software-solutions (39 answers)
- https://cyberbench.net/blog/best-easm-platforms-mid-market-2026 (38 answers)
- https://g2.com/categories/attack-surface-management/small-business (37 answers)
- https://attaxion.com/top-external-attack-surface-management-vendors (28 answers)
- https://guideflow.com/blog/attack-surface-management-software (19 answers)
- https://geekflare.com/cybersecurity/best-attack-surface-monitoring (16 answers)
- https://wiz.io/academy/cloud-security/attack-surface-management-tools (16 answers)
- https://paloaltonetworks.com/cyberpedia/asm-tools-comparison (15 answers)
- https://gartner.com/reviews/market/external-attack-surface-management (14 answers)

## Warned against

- Cortex Xpanse: 21 of 22 labels negative. "you should generally steer clear of the following... Palo Alto Cortex Xpanse / Mandiant ASM: Extremely powerful, but built for giant companies." (Gemini 3.5 Flash, direct prompt)
- CyCognito: 17 of 22 labels negative. "one review notes that small businesses should likely steer clear because pricing is not public and could lead to a large bill" (Perplexity Sonar, negative prompt)
- Tenable Attack Surface Management: 9 of 11 labels negative. "Purchasing this as a standalone solution for a small business often means missing features found in competitors" (Qwen 3.7 Flash, negative prompt)
- Microsoft Defender External Attack Surface Management: 9 of 18 labels negative. "Enterprise-heavy tools (e.g., Microsoft Defender EASM, CrowdStrike Falcon Surface) were excluded" (Grok 4.20, comparative prompt)

## Record

- Method: https://www.gane.ai/index/it/methodology
- License: CC BY 4.0. Cite as Gane Index, September 2026 Edition, www.gane.ai/index/it.