# Data loss prevention for enterprise buyers: what AI models recommend, October 2026

Gane Index, October 2026 Edition. Asked as "data loss prevention platform" and as "DLP 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/data-loss-prevention/2026-10/enterprise

This is the permanent record of the October 2026 Edition, published October 1, 2026 and superseded since. The current standing: https://www.gane.ai/index/it/security/data-loss-prevention/enterprise/index.md

**Standing:** Microsoft Purview DLP leads with 57% 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 | [Microsoft Purview DLP](https://www.gane.ai/index/it/vendors/microsoft-purview-dlp/index.md) | 57% | 11% | 71 |
| 2 | [Forcepoint DLP](https://www.gane.ai/index/it/vendors/forcepoint-dlp/index.md) | 15% | 19% | 68 |
| 3 | [Symantec Data Loss Prevention](https://www.gane.ai/index/it/vendors/symantec-data-loss-prevention/index.md) | 7% | 35% | 63 |
| 4 | [Cyberhaven](https://www.gane.ai/index/it/vendors/cyberhaven/index.md) | 6% | 0% | 19 |
| 5 | [Netskope DLP](https://www.gane.ai/index/it/vendors/netskope-dlp/index.md) | 4% | 5% | 42 |
| 6 | [Proofpoint Enterprise DLP](https://www.gane.ai/index/it/vendors/proofpoint-enterprise-dlp/index.md) | 4% | 13% | 31 |
| 7 | [Trellix DLP](https://www.gane.ai/index/it/vendors/trellix-dlp/index.md) | 4% | 37% | 19 |
| 10 | [Zscaler Internet Access](https://www.gane.ai/index/it/vendors/zscaler-internet-access/index.md) | 0% | 5% | 22 |
| 11 | [Nightfall AI](https://www.gane.ai/index/it/vendors/nightfall-ai/index.md) | 0% | 8% | 12 |
| 12 | [Fortra DLP](https://www.gane.ai/index/it/vendors/fortra-dlp/index.md) | 0% | 17% | 12 |
| 13 | [Digital Guardian](https://www.gane.ai/index/it/vendors/digital-guardian/index.md) | 0% | 21% | 14 |

Rank is by share of first choices among all 57 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: Forcepoint DLP; alternatives CrowdStrike Falcon Data Protection, Fortra DLP, Microsoft Purview DLP, Symantec Data Loss Prevention
- GPT-5.4 mini: Microsoft Purview DLP; alternatives Forcepoint DLP, Symantec Data Loss Prevention
- Gemini 3.5 Flash: Cyberhaven, Microsoft Purview DLP; alternatives Forcepoint DLP, Netskope DLP, Symantec Data Loss Prevention, Zscaler Internet Access
- Perplexity Sonar: Microsoft Purview DLP; alternatives Cyberhaven, Forcepoint DLP, Nightfall AI, Symantec Data Loss Prevention
- Grok 4.20: Forcepoint DLP; alternatives Digital Guardian, Proofpoint Enterprise DLP, Symantec Data Loss Prevention
- Mistral Small: Trellix DLP; alternatives Forcepoint DLP, Strac
- DeepSeek V4 Flash: Forcepoint DLP; alternatives Microsoft Purview DLP, Netskope DLP, Symantec Data Loss Prevention, Zscaler Internet Access
- Llama 4 Maverick: Strac; alternatives Forcepoint DLP, Microsoft Purview DLP, Proofpoint Enterprise DLP, Symantec Data Loss Prevention
- Qwen 3.7 Flash: Microsoft Purview Information Protection; alternatives Digital Guardian, Forcepoint DLP, Netskope DLP
- Kimi K2: Microsoft Purview DLP; alternatives Forcepoint DLP, Proofpoint Enterprise DLP, Symantec Data Loss Prevention
- GLM 4.7 FlashX: Microsoft Purview DLP; alternatives Forcepoint DLP, Nightfall AI, Symantec Data Loss Prevention
- MiniMax M2.5: Microsoft Purview DLP, Proofpoint Enterprise DLP; alternatives Cloudflare One, Netskope DLP, Symantec Data Loss Prevention, Trellix DLP
- GPT-6 Luna: Microsoft Purview DLP, Netskope DLP; alternatives Forcepoint DLP, Proofpoint Enterprise DLP
- Muse Glimmer 30B: Microsoft Purview DLP; alternatives Forcepoint DLP, Netskope DLP

## Sources the answers cite

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

- strac.io: 53 answers, 86 citations
- forcepoint.com: 47 answers, 103 citations
- underdefense.com: 36 answers, 38 citations
- checkpoint.com: 33 answers, 33 citations
- currentware.com: 31 answers, 32 citations
- gartner.com: 26 answers, 44 citations
- cyberhaven.com: 25 answers, 34 citations
- venn.com: 20 answers, 21 citations

Pages named in the most answers:

- https://forcepoint.com/blog/insights/best-dlp-software (37 answers)
- https://underdefense.com/blog/dlp-solutions (36 answers)
- https://strac.io/blog/top-data-loss-prevention-dlp-tools (36 answers)
- https://checkpoint.com/cyber-hub/threat-prevention/what-is-data-loss-prevention/top-6-data-loss-prevention (33 answers)
- https://currentware.com/blog/best-data-loss-prevention-software (31 answers)
- https://gartner.com/reviews/market/data-loss-prevention (21 answers)
- https://cyberhaven.com/blog/top-dlp-solutions (19 answers)
- https://venn.com/learn/dlp/dlp-software (19 answers)
- https://cio.economictimes.indiatimes.com/tools/best-dlp-software/126136531 (18 answers)
- https://netwrix.com/en/resources/blog/dlp-solutions (18 answers)

## Warned against

- Symantec Data Loss Prevention: 22 of 63 labels negative. "Legacy/Traditional DLP (e.g., Symantec/Broadcom DLP, Forcepoint DLP, McAfee/Trellix DLP):
   - Why cautious/avoid: Designed for on-premises/perimeter defense but falter at enterprise scale." (Grok 4.20, negative prompt)
- Forcepoint DLP: 13 of 68 labels negative. "When to avoid: If you need straightforward deployment and have limited specialized DLP staff, evaluate newer alternatives first." (MiniMax M2.5, negative prompt)
- Microsoft Purview DLP: 8 of 71 labels negative. "Microsoft Purview DLP is one to evaluate carefully in large, complex enterprises... inconsistent design, difficulty scoping policies across large organizations, and support delays" (GPT-5.4 mini, negative prompt)
- Trellix DLP: 7 of 19 labels negative. "Legacy/Traditional DLP (e.g., Symantec/Broadcom DLP, Forcepoint DLP, McAfee/Trellix DLP)... Why cautious/avoid" (Grok 4.20, negative prompt)

## Movement since September 2026

Floor: 11 points of share, measured on the calibration repeat.
Same leader: Microsoft Purview DLP at 57%.

- Microsoft Purview DLP: 52% to 57%, +5. Inside the floor by 6 points · rank 1 of 52, unchanged.
- Forcepoint DLP: 19% to 15%, −4. Inside the floor by 7 points · rank 2 of 52, unchanged.
- Trellix DLP: 0% to 4%, +4. Inside the floor by 7 points · rank 19 → 6 of 52.
- Symantec Data Loss Prevention: 12% to 9%, −3. Inside the floor by 8 points · rank 3 of 52, unchanged.
- Proofpoint Enterprise DLP: 2% to 4%, +2. Inside the floor by 9 points · rank 6 → 5 of 52.
- Netskope DLP: 2% to 0%, −2. Inside the floor by 9 points · rank 5 → 9 of 52.
- Fortra DLP: 2% to 0%, −2. Inside the floor by 9 points · rank 7 → 12 of 52.
- Cyberhaven: 5% to 6%, +1. Inside the floor by 10 points · rank 4 of 52, unchanged.
- Zscaler Internet Access: 0% to 0%, ±0. Inside the floor by 11 points · rank 10 of 52, unchanged.
- Nightfall AI: 0% to 0%, ±0. Inside the floor by 11 points · rank 16 → 11 of 52.
- Digital Guardian: 0% to 0%, ±0. Inside the floor by 11 points · rank 13 of 52, unchanged.

## Record

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