# OT and IoT security: what AI models recommend, November 2026

Gane Index, November 2026 Edition. Asked as "OT security platform" and as "industrial and IoT device security tool", six framings each, to fourteen models with search on, on behalf of a mid-market B2B company. Added to the November 2026 Edition. Page: https://www.gane.ai/index/it/security/ot-and-iot-security

**Standing:** Microsoft Defender for IoT leads with 38% of first choices; verdict contested. 50 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| Rank | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | [Microsoft Defender for IoT](https://www.gane.ai/index/it/vendors/microsoft-defender-for-iot/index.md) | 38% | 8% | 49 |
| 2 | [Claroty xDome](https://www.gane.ai/index/it/vendors/claroty-xdome/index.md) | 20% | 25% | 61 |
| 3 | [Nozomi Networks Guardian](https://www.gane.ai/index/it/vendors/nozomi-networks-guardian/index.md) | 8% | 24% | 51 |
| 4 | [Fortinet OT Security Platform](https://www.gane.ai/index/it/vendors/fortinet-ot-security-platform/index.md) | 6% | 14% | 28 |
| 6 | [Armis Centrix](https://www.gane.ai/index/it/vendors/armis-centrix/index.md) | 2% | 14% | 37 |
| 7 | [Tenable OT Security](https://www.gane.ai/index/it/vendors/tenable-ot-security/index.md) | 2% | 7% | 27 |
| 8 | [Forescout Vistaro Platform](https://www.gane.ai/index/it/vendors/forescout-vistaro-platform/index.md) | 2% | 6% | 17 |
| 9 | [Palo Alto Networks OT Security](https://www.gane.ai/index/it/vendors/palo-alto-networks-ot-security/index.md) | 2% | 17% | 23 |
| 18 | [AWS IoT Device Defender](https://www.gane.ai/index/it/vendors/aws-iot-device-defender/index.md) | 0% | 10% | 10 |
| 20 | [Dragos Platform](https://www.gane.ai/index/it/vendors/dragos-platform/index.md) | 0% | 39% | 44 |
| 39 | [Darktrace](https://www.gane.ai/index/it/vendors/darktrace/index.md) | 0% | 30% | 10 |

Rank is by share of first choices among all 143 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: Asimily; alternatives Claroty xDome, Forescout Vistaro Platform, Tenable OT Security
- GPT-5.4 mini: Claroty xDome; alternatives Fortinet OT Security Platform, Nozomi Networks Guardian, Tenable OT Security
- Gemini 3.5 Flash: Claroty xDome; alternatives Armis Centrix, Fortinet OT Security Platform, Microsoft Defender for IoT, Nozomi Networks Guardian
- Perplexity Sonar: Microsoft Defender for IoT; alternatives Fortinet OT Security Platform, Nozomi Networks Guardian, Tenable OT Security
- Grok 4.20: Claroty xDome; alternatives Dragos Platform, Nozomi Networks Guardian
- Mistral Small: Claroty xDome, Microsoft Defender for IoT; alternatives Dragos Platform, Nozomi Networks Guardian, Tenable OT Security
- DeepSeek V4 Flash: Microsoft Defender for IoT; alternatives Claroty xDome, Nozomi Networks Guardian
- Llama 4 Maverick: no first choice
- Qwen 3.7 Flash: Claroty xDome; alternatives Armis Centrix, Microsoft Defender for IoT, Nozomi Networks Guardian
- Kimi K2: Microsoft Defender for IoT, Nozomi Networks Guardian; alternatives OTORIO, SecuPi
- GLM 4.7 FlashX: Fortinet OT Security Platform; alternatives Claroty xDome, Palo Alto Networks OT Security
- MiniMax M2.5: Microsoft Defender for IoT, Nozomi Networks Vantage; alternatives Fortinet OT Security Platform, Palo Alto Networks Zero Trust OT Security
- GPT-6 Luna: Claroty xDome; alternatives Nozomi Vantage
- Muse Glimmer 30B: Nozomi Networks Guardian; alternatives Claroty xDome, Fortinet OT Security Platform, Microsoft Defender for IoT, Tenable OT Security

## Sources the answers cite

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

- guideflow.com: 28 answers, 36 citations
- paloaltonetworks.com: 24 answers, 28 citations
- reliamag.com: 24 answers, 24 citations
- github.com: 22 answers, 42 citations
- fortinet.com: 22 answers, 34 citations
- sourceforge.net: 21 answers, 25 citations
- securityboulevard.com: 17 answers, 22 citations
- startupstash.com: 17 answers, 17 citations

Pages named in the most answers:

- https://reliamag.com/topics/guides/best-industrial-cybersecurity-platforms-ot-ics-security-2026 (24 answers)
- https://guideflow.com/blog/ot-security-tools (23 answers)
- https://paloaltonetworks.com/content/dam/pan/en_US/assets/pdf/Omdia-Market-Radar-OT-Cybersecurity-Platforms-2026.pdf (19 answers)
- https://startupstash.com/best-ot-ics-security-platforms (17 answers)
- https://github.com/ishandutta2007/Awesome-IoT-Device-Security-Management/blob/main/README.md (14 answers)
- https://networkintelligence.ai/blogs/best-ot-security-services (13 answers)
- https://ciopages.com/buyer-guides/ot-ics-security (12 answers)
- https://guideflow.com/blog/iot-security-solutions (12 answers)
- https://qksgroup.com/blogs/qks-review-ot-security-unveiled-can-vendors-safeguard-our-critical-infrastructure-1281 (12 answers)
- https://securecoding.com/ot-iot/it-ot-security-platforms (12 answers)

## Warned against

- Dragos Platform: 17 of 44 labels negative. "or Dragos (strong in detection/response but services-heavy) unless you can start with their entry-level or managed service tiers" (Grok 4.20, budget prompt)
- Claroty xDome: 15 of 61 labels negative. "Avoid premium OT-native leaders like Claroty (excellent for visibility/remote access but complex/expensive)" (Grok 4.20, budget prompt)
- Nozomi Networks Guardian: 12 of 51 labels negative. "Avoid premium OT-native leaders like Claroty ... or Nozomi (great passive sensors)" (Grok 4.20, budget prompt)
- Armis Centrix: 5 of 37 labels negative. "Avoid the premium OT-native suites – Claroty, Nozomi, Dragos, Armis – for a tight budget" (Muse Glimmer 30B, budget prompt)

## Movement since October 2026

Floor: 11 points of share, measured on the calibration repeat.
Same leader: Microsoft Defender for IoT at 38%.

- Microsoft Defender for IoT: 21% to 38%, +17. Cleared the floor by 6 points · rank 1 of 143, unchanged.
- Armis Centrix: 6% to 2%, −4. Inside the floor by 7 points · rank 5 → 6 of 143.
- Nozomi Networks Guardian: 10% to 8%, −2. Inside the floor by 9 points · rank 3 of 143, unchanged.
- Fortinet OT Security Platform: 8% to 6%, −2. Inside the floor by 9 points · rank 4 of 143, unchanged.
- Tenable OT Security: 4% to 2%, −2. Inside the floor by 9 points · rank 7 of 143, unchanged.
- Forescout Vistaro Platform: 0% to 2%, +2. Inside the floor by 9 points · rank 19 → 8 of 143.
- Dragos Platform: 2% to 0%, −2. Inside the floor by 9 points · rank 9 → 20 of 143.
- Claroty xDome: 19% to 20%, +1. Inside the floor by 10 points · rank 2 of 143, unchanged.
- Palo Alto Networks OT Security: 2% to 2%, ±0. Inside the floor by 11 points · rank 10 → 9 of 143.
- AWS IoT Device Defender: 0% to 0%, ±0. Inside the floor by 11 points · rank 31 → 18 of 143.
- Darktrace: 0% to 0%, ±0. Inside the floor by 11 points · rank 40 → 39 of 143.

## 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.