Data loss prevention
Controls that detect and block sensitive data leaving through endpoints, email, web and cloud channels.
14 vendors · alphabetical, never ranked
- Barracuda NetworksBarracuda Networks sells the BarracudaONE cybersecurity platform, covering email protection, application protection, network security and data protection, along with a managed XDR service.Owned by KKR since 2022
- BigIDBigID sells a data security platform that discovers and classifies sensitive data, assesses who can access it, and runs remediation workflows, with add-on data loss prevention and natural-language query capabilities aimed at AI governance and privacy compliance.Privately held
- BroadcomBroadcom sells Symantec Enterprise Cloud, a security portfolio covering endpoint, network, information and email security, including endpoint detection, response and management products.Public (NASDAQ: AVGO)
- Concentric AIConcentric AI sells a data security governance platform that discovers and classifies sensitive data by its meaning rather than by pattern matching, then reports on access, sharing and compliance risk, with capabilities the company associates with DSPM, DLP and AI security.Privately held
- CyberhavenCyberhaven sells a data security platform that traces where sensitive data lives and moves, combining data loss prevention, data security posture management, insider risk management and controls for AI agent activity.Privately held · primary category
- CyeraCyera sells a data security platform covering data security posture management, data loss prevention and non-human identity discovery, combining agentless scanning and AI classification to locate sensitive data and control who and what can reach it.Privately held
- DTEX SystemsDTEX Systems sells an insider risk management platform that combines user activity monitoring, behavioral analytics and adaptive data loss prevention, along with investigative services and AI agent risk tools.Privately held
- EgressEgress sold a cloud email security platform that assesses human risk and adapts policy controls to defend against phishing and outbound data loss.Owned by KnowBe4 since 2024
- Keep AwareKeep Aware sells a browser security platform that deploys as an extension into existing browsers to give organizations visibility into browser activity, detect and respond to browser-based threats such as phishing and malicious extensions, and monitor employee use of generative AI tools.Owned by Jamf
- Menlo SecurityMenlo Security sells a browser security platform that adds zero-day threat prevention, secure access and data protection to browsers used by employees and AI agents, delivered through a cloud-based architecture that does not require endpoint software.Privately held
- NetskopeNetskope sells a secure access service edge platform, with products covering secure web gateway, zero trust private access, AI usage security and data loss prevention.Public (NASDAQ: NTSK)
- SquareXSquareX sells a browser extension that adds Browser Detection and Response, enterprise browser controls and browser-based data loss prevention to any existing browser, so it detects and threat-hunts client-side web attacks against employees in real time.Owned by Zscaler since 2026
- Sublime SecuritySublime Security sells an email security platform built around AI agents that triage reported and suspicious emails and design new detections, along with an email data loss prevention module.Privately held
- TrustifiTrustifi sells an email security platform covering inbound threat detection, outbound data loss prevention, account takeover protection and email archiving, with a separate module extending scanning to Microsoft Teams, OneDrive and SharePoint.Privately held
No vendor pays to be listed or to change what we write. Descriptions are ours, drawn from each company's own site and filings. Corrections: /corrections.