Sensitive data rarely leaks through the obvious channels anymore. More often it slips out through a pasted spreadsheet, a forwarded email, or a prompt typed straight into a public AI chatbot. Data loss prevention (DLP) software tracks and controls how that data moves — across endpoints, email, cloud apps, and now generative AI tools — blocking or flagging a risky transfer before it turns into a breach.
This category covers a lot of ground: native tools built right into productivity suites, dedicated enterprise DLP suites built for regulated industries, and newer cloud-native, agentless platforms built specifically to catch leaks into SaaS apps and GenAI tools like ChatGPT and Copilot.
Pricing and features here came straight from each vendor's own site, not a review-aggregator score standing in for firsthand research. Seven real, currently-active DLP platforms made the cut — no filler picks, no discontinued products.
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Quick Summary: Microsoft Purview DLP is the default choice for organizations already licensed for Microsoft 365 E5. Forcepoint DLP and Symantec DLP (Broadcom) are still the go-to picks for large regulated enterprises with on-premises estates. Proofpoint DLP leads on email-centric protection, and Netwrix Endpoint Protector covers cross-platform endpoint device control well for SMBs. Mimecast Incydr (formerly Code42) specializes in insider risk detection, and Nightfall AI is built cloud-native for SaaS and GenAI data leakage.
Why You Need DLP Software
Counting on employees to just know not to share sensitive data works fine, right up until someone makes an honest mistake or a malicious insider decides to walk out with customer records. Dedicated DLP tends to pay for itself the very first time it stops a real leak:
- Regulatory compliance: GDPR, HIPAA, PCI-DSS — frameworks like these increasingly demand proof of real controls over how regulated data gets handled and where it's allowed to travel.
- Insider risk detection: Behavioral monitoring catches a departing employee moving an unusual volume of files, before they're out the door with company IP in hand.
- GenAI leakage prevention: Modern DLP catches sensitive data the moment it's pasted into ChatGPT, Copilot, or similar tools — before it ends up in a third-party model's training data or logs.
- Cross-channel visibility: One policy engine covering endpoints, email, and cloud apps closes gaps that a point solution covering just a single channel would leave wide open.
- Reduced breach impact and cost: Catching an exfiltration attempt while it's happening costs a fraction of what incident response, breach notification, and reputational damage cost once a breach is confirmed.
Best 7 Data Loss Prevention (DLP) Software in 2026
1. Microsoft Purview DLP
Microsoft Purview DLP is the data loss prevention layer baked directly into Microsoft 365, and it extends policy enforcement across Exchange, SharePoint, OneDrive, Teams, and endpoints for organizations already standardized on the Microsoft stack.
Pricing: Included at no extra cost for Microsoft 365 E5 licensees; available as a standalone Purview compliance add-on for around $12/user/month for organizations on lower-tier plans. Some capabilities bill on a consumption basis. Contact Microsoft for exact licensing.
Key features:
- Native coverage across Exchange, SharePoint, OneDrive, and Teams
- Endpoint DLP for Windows and macOS devices
- Sensitivity labels shared across the Purview compliance suite
- Copilot and GenAI prompt protection
- Bundled with broader compliance tools like eDiscovery and Insider Risk Management
Best for: Organizations already deep in the Microsoft 365 ecosystem wanting DLP that comes bundled with existing licensing.
2. Forcepoint DLP
Forcepoint DLP has been around long enough to earn its enterprise reputation, and it's built for large, regulated organizations that need one consistent policy across on-premises infrastructure, cloud apps, and endpoints.
Pricing: Custom quote-based pricing for both on-premises and Forcepoint DLP SaaS/Cloud deployments; third-party estimates put entry pricing around $52/user annually. Contact Forcepoint for an exact quote.
Key features:
- On-premises, hybrid, and cloud-managed deployment options
- Risk-adaptive protection that adjusts controls to user behavior
- Deep content and context-aware classification
- Integrated with Forcepoint's broader SASE and security portfolio
- Extensive out-of-the-box regulatory compliance policy templates
Best for: Large regulated enterprises needing consistent DLP policy across on-premises and cloud infrastructure.
3. Symantec DLP (Broadcom)
Symantec DLP now sits inside Broadcom's cybersecurity portfolio, but it's still one of the most established enterprise DLP platforms around, with content inspection capabilities built up over nearly two decades in the market.
Pricing: Subscription-based, typically priced per user or endpoint covered, with cloud and on-premises packages priced separately. Broadcom does not publish standard rates; contact Broadcom or an authorized reseller for a quote.
Key features:
- Deep content inspection across endpoint, network, and storage
- Cloud DLP package for SaaS and cloud storage coverage
- Integration with the broader Symantec/Broadcom security suite
- Fingerprinting for structured and unstructured data
- Mature policy library for common compliance frameworks
Best for: Large enterprises with complex, mixed on-premises and cloud environments needing the deepest content inspection.
4. Proofpoint DLP
Proofpoint made its name in email security, and its DLP module puts that same threat intelligence and content analysis to work catching sensitive data leaving through email — still the most common exfiltration channel for most organizations.
Pricing: Modular, user-based pricing driven by which modules you enable; third-party estimates put enterprise-grade DLP bundles roughly between $25 and $70 per user/year. Contact Proofpoint for a custom quote.
Key features:
- Email-focused DLP tightly integrated with Proofpoint email security
- Behavioral and content-based detection combined
- Cloud app DLP for Microsoft 365 and Google Workspace
- Insider threat and endpoint visibility add-ons
- Unified console with Proofpoint's broader threat protection suite
Best for: Organizations wanting DLP tightly integrated with email security, their highest-risk data loss channel.
5. Netwrix Endpoint Protector
Netwrix Endpoint Protector, formerly CoSoSys, enforces one set of DLP and device control policies across Windows, macOS, and Linux endpoints from a single console — offline device control and content-aware protection both included.
Pricing: Custom quote-based; third-party estimates for a 250-user deployment range from about $8,250 for Device Control only up to $14,850 with Content Aware Protection included. Contact Netwrix for a tailored quote.
Key features:
- Cross-platform coverage: Windows, macOS, and Linux
- Device control for USB, printers, and peripherals
- Content-aware protection across structured and unstructured data
- Coverage for SaaS apps including Salesforce, GitHub, and Slack
- eDiscovery and forensic reporting
Best for: SMBs and mid-market teams needing consistent DLP policy across mixed-OS endpoint fleets.
6. Mimecast Incydr (Code42)
Incydr started life at Code42 and now lives inside Mimecast after its 2024 acquisition, and it stays laser-focused on insider risk — tracking file movement and behavioral signals across endpoints, cloud, and email without resorting to the invasive keystroke logging some competitors rely on.
Pricing: Custom quote-based, with licensing packages typically starting at 500 users across Basic and Advanced plan tiers. A 30-day free trial is available. Contact Mimecast for a quote.
Key features:
- Metadata-based monitoring instead of invasive content surveillance
- Behavioral risk indicators for offboarding and resignation windows
- Coverage across endpoints, browsers, cloud, SaaS, and GenAI tools
- Automated response workflows for high-risk activity
- Now integrating with Mimecast's broader Human Risk Management platform
Best for: Organizations most concerned with insider risk and departing-employee data theft rather than broad content filtering.
7. Nightfall AI
Nightfall AI skips installed agents entirely, covering Slack, Google Workspace, Microsoft 365, and generative AI tools through API-based integrations instead — a cloud-native approach built for the SaaS and GenAI era.
Pricing: Value-based, usage-driven pricing; entry-level and developer API plans start around $4/month, while full Enterprise DLP/DSPM contracts typically start around $75,000/year. Contact Nightfall sales for a tailored quote.
Key features:
- Agentless, API-based deployment across SaaS apps
- GenAI firewall for tools like ChatGPT and Copilot
- Machine learning-based detection tuned for low false positives
- Developer-friendly APIs for custom DLP integrations
- Rapid deployment with no endpoint agents to manage
Best for: Cloud-first companies wanting fast, agentless DLP coverage across SaaS and generative AI tools.
| Tool | Best For | Starting Price | Standout Feature |
|---|---|---|---|
| Microsoft Purview DLP | Microsoft 365 shops | Included in E5 / ~$12/user/mo | Native M365 + Copilot coverage |
| Forcepoint DLP | Large regulated enterprises | Custom (~$52/user/yr est.) | Risk-adaptive protection |
| Symantec DLP | Complex hybrid enterprises | Custom | Deep content inspection |
| Proofpoint DLP | Email-centric protection | Custom (~$25-70/user/yr est.) | Integrated email threat intel |
| Netwrix Endpoint Protector | SMB mixed-OS endpoints | Custom (~$8,250+ est.) | Cross-platform device control |
| Mimecast Incydr | Insider risk detection | Custom (500-user minimum) | Privacy-friendly metadata monitoring |
| Nightfall AI | SaaS & GenAI leakage | From ~$4/month | Agentless, API-based coverage |
Final Thoughts
Let your existing stack and threat model drive this choice more than any single feature does. Already licensed for Microsoft 365 E5? Purview DLP gets you the fastest path to coverage, since it's bundled instead of a separate purchase.
Large regulated enterprises running on-premises infrastructure are better served by the depth Forcepoint or Symantec DLP offers. Email-heavy organizations should put Proofpoint first. SMBs managing mixed-OS endpoints should look at Netwrix Endpoint Protector, insider-risk-focused security teams should evaluate Mimecast Incydr, and cloud-first companies chasing SaaS and GenAI leakage should start with Nightfall AI.
Whatever you choose, remember DLP is only as good as its policy tuning. Budget real time for a rollout period focused on cutting false positives before you start enforcing hard blocks.