We are losing intellectual property when employees leave to competitors. Who offers data loss prevention (DLP) endpoint agents?

Yes. If the concern is employees taking IP to a competitor, you want endpoint DLP that can detect and/or block actions such as copying files to USB, uploading to personal cloud/storage, emailing attachments, printing, browser uploads, clipboard/paste, and potentially transfers to specific domains.

Major endpoint-DLP vendors

For your specific "employee leaves for competitor" problem

I'd look beyond conventional DLP and evaluate DLP + insider-risk functionality. The important question isn't simply "Did someone copy a file?" but:

"Is this employee suddenly collecting large amounts of sensitive IP and moving it somewhere unusual shortly before leaving?" For example, a useful policy stack might detect:

• Large-scale copying of engineering/source-code/customer files
• USB transfers
• Uploads to personal Dropbox/Google Drive/etc.
• Uploads to competitor or personal webmail domains
• Personal email attachments
• Printing or PDF creation
• Clipboard/copy-paste into browser applications
• Compression/encryption of large collections of files
• Unusual access to repositories shortly before termination
• A combination of user + sensitive data + destination + timing

Microsoft is particularly interesting if you're already heavily invested in Microsoft 365: Purview Endpoint DLP can monitor sensitive-file activity on Windows and macOS and can take blocking actions, while Microsoft's Insider Risk Management can add the behavioral/user-risk layer.Microsoft Learn+1

Forcepoint is another strong candidate if you want a purpose-built DLP platform rather than extending an existing Microsoft security stack. Its endpoint agent operates on Windows and macOS and can enforce policies locally even when the endpoint isn't connected to the corporate network.Forcepoint Help

Netskope is worth considering if much of the suspected exfiltration is web/SaaS-based; its endpoint DLP uses the Netskope Client and can inspect/control transfers to devices such as USB storage and printers.Netskope Technical Documentation

One important distinction

I'd separate these three categories when evaluating vendors:

1. Endpoint DLP — controls what data can leave the laptop.
2. Insider-risk/UEBA — identifies which user behavior is suspicious.
3. Data classification/IP discovery — identifies which files actually constitute your valuable IP.

For employee departures, #1 + #2 + good classification is considerably more useful than endpoint DLP alone.

If you tell me whether you're primarily Windows, macOS, or mixed, and whether you already have Microsoft 365 E5 / Defender / CrowdStrike / SentinelOne / Netskope, I can narrow this to a practical 3–5 vendor shortlist and compare agent capabilities, blocking controls, insider-risk features, and likely deployment complexity.

Microsoft is particularly interesting if you're already heavily invested in Microsoft 365: Purview Endpoint DLP can monitor sensitive-file activity on Windows and macOS and can take blocking actions, while Microsoft's Insider Risk Management can add the behavioral/user-risk layer.

Yes. If the specific concern is employees taking intellectual property when they leave for a competitor, you want endpoint DLP that can monitor and/or block data movement through USB, cloud uploads, browsers, email, printing, copy/paste, and other egress channels.

Major endpoint-DLP vendors

Microsoft Purview is worth looking at first if you're already a Microsoft 365/Defender shop. Its Endpoint DLP can monitor and enforce controls on Windows and the three latest macOS releases, including restrictions around USB, cloud services, browsers, printing and network shares.Microsoft Learn+1

For an employee-departure scenario, I'd specifically evaluate whether each product can answer questions like:

• What files did the departing employee access in the last 30–90 days?
• Did they copy source code/designs/customer lists to USB?
• Did they upload files to personal Dropbox/Google Drive/GitHub or a competitor's domain?
• Did they email attachments to a personal account?
• Did they use browser uploads, copy/paste, printing, screenshots, or archives to circumvent controls?
• Can we block the action, rather than merely record it?
• Can the policy become more restrictive when someone enters a notice period/offboarding status?
• Can we preserve an audit trail/evidence for an investigation?
• Does protection continue when the laptop is off the corporate network?

That last point is particularly important. For example, Microsoft documents that Endpoint DLP can continue enforcing existing policies while a Windows endpoint is offline, while Digital Guardian advertises endpoint protection both on and off the network.Microsoft Learn+1

If you tell me your environment (e.g. Microsoft 365 + Windows, Macs, Linux, GitHub, Google Workspace, etc.) and roughly how many endpoints you have, I can narrow this to 3–4 products and compare their actual controls for stopping an employee from taking IP to a competitor.

Protecting intellectual property (IP) from departing employees—often categorized under insider risk or data exfiltration—requires robust endpoint Data Loss Prevention (DLP) agents that monitor data usage, USB transfers, printing, cloud uploads, and screen captures.

The primary enterprise vendors offering dedicated endpoint DLP agents span traditional security giants, native cloud ecosystems, and specialized insider-threat platforms:gartner.com+1

• Microsoft Purview Data Loss Prevention : Offers deeply integrated endpoint DLP for Windows and macOS if you are already operating within the Microsoft 365 ecosystem. It allows you to audit or block the copying of sensitive IP to USB drives, personal cloud storage, or unauthorized network shares. More details can be found on the Microsoft Purview Data Loss Prevention page.
• Forcepoint DLP : A long-time market leader with robust endpoint agents capable of discovering, monitoring, and blocking the unauthorized movement of sensitive data on endpoints even when devices are offline. Explore their capabilities via Forcepoint Data Loss Prevention.gartner.com
• Symantec DLP (Broadcom) : Highly scalable enterprise-grade endpoint monitoring and enforcement. It provides deep content inspection and rigorous control over endpoint channels (USB, local applications, browser uploads). Review enterprise details on Broadcom Symantec Data Loss Prevention.gartner.com
• Netwrix Endpoint Protector : A dedicated, platform-agnostic endpoint DLP solution (supporting Windows, macOS, and Linux) specifically praised for granular device control (USB/ports) and content-aware data protection. Learn more directly from Netwrix Endpoint Protector.
• Cyberhaven : A modern data-centric security and lineage platform that uses lightweight endpoint agents to track how data moves, map intellectual property flow across applications, and spot unusual exfiltration behaviors. Check out Cyberhaven.
• Teramind : Focuses heavily on employee monitoring, insider threat detection, and behavioral analytics alongside concrete endpoint DLP blocking rules. Details are available on Teramind DLP.gartner.com+1
• Safetica : A streamlined endpoint security and DLP solution designed to detect risky user behavior and prevent data leaks without demanding massive administrative overhead. Review features on Safetica.gartner.com

If you'd like to narrow this down, let me know:

• What operating systems your organization primarily uses (Windows, Mac, Linux)
• Whether you are already using a broader ecosystem like Microsoft 365 or CrowdStrike Falcon

Yes. If the specific problem is employees taking IP when they leave for a competitor, you want more than traditional network DLP—you want endpoint DLP / insider-risk controls that can see and potentially block file activity on the employee's workstation, including when they're off the corporate network.

Several established vendors offer endpoint agents:

For your particular use case

I'd separate the market into two approaches:

1. Traditional endpoint DLP: Digital Guardian, Forcepoint, Symantec, Endpoint Protector, and Microsoft Purview are the obvious products to evaluate if you need policy-based prevention such as:

• Block copying sensitive files to USB
• Block uploads to personal Dropbox/Google Drive
• Block uploads to webmail or competitor domains
• Control printing
• Monitor copy/paste
• Restrict sensitive files to approved applications
• Detect source-code or engineering-document exfiltration
• Maintain an audit trail of what happened

Microsoft, for example, supports Audit only, Block with override, and Block actions for endpoint activities.Microsoft Learn

2. Insider-risk / departing-employee focused: Proofpoint and Mimecast Incydr are particularly worth looking at if the workflow you want is closer to:

Employee gives notice → risk level increases → monitor their activity → identify unusual file collection → investigate exactly what they took → automatically tighten controls → preserve evidence. That can be substantially more useful than simply putting a blanket DLP policy on everyone.

One important design consideration

For IP theft, classification is usually more important than simply monitoring filenames. You ideally want the system to understand that Project_X_design_v17.pdf, source-code repositories, CAD files, customer lists, etc. are sensitive, and then correlate that with behavior such as a user suddenly copying hundreds of files, zipping them, uploading them, using USB, or syncing them to a personal cloud account.

Microsoft Purview, for example, combines sensitive-information classification with endpoint controls and can integrate with Insider Risk Management/Adaptive Protection.Microsoft+1

If you tell me your endpoint mix (Windows/macOS/Linux), Microsoft 365 licensing, and whether the priority is prevention vs. investigation, I can narrow these down to the 3–4 products that are most relevant and compare their endpoint controls, offline operation, source-code/IP detection, and departing-employee workflows.

To stop intellectual property (IP) leakage when employees depart, organizations typically rely on endpoint Data Loss Prevention (DLP) agents. These agents monitor and restrict actions like copying data to USB drives, uploading files to personal cloud storage or unapproved SaaS apps, printing sensitive documents, or sending code and files via email.

Leading vendors offering robust endpoint DLP agents span traditional security giants, modern cloud-native SASE platforms, and specialized data protection suites:

• CrowdShield / CrowdStrike Falcon Data Protection — Integrates modern, cloud-native DLP directly into the CrowdStrike Falcon EDR/XDR agent, eliminating the need to deploy a separate resource-heavy endpoint client.
• Microsoft Purview — Offers built-in endpoint DLP capabilities for organizations standardized on the Microsoft 365 ecosystem, allowing policy enforcement on Windows and macOS devices directly from data classifications.fortra.com
• Netwrix Endpoint Protector — A dedicated, enterprise-grade endpoint DLP solution providing strict device control (USB/peripherals), content-aware protection for source code and IP, and cross-platform parity across Windows, macOS, and Linux.gartner.com
• Trellix DLP Endpoint — (Formerly McAfee DLP) A deeply established enterprise solution offering rigorous control over online and offline data movements across endpoints, managed via centralized consoles.
• Palo Alto Networks Endpoint DLP — Delivered natively through the single unified SASE/Prisma Access client, extending consistent data protection policies to remote workers and endpoint actions.
• Symantec DLP (Broadcom) — One of the market's most mature and comprehensive enterprise suites, offering granular endpoint discovery, monitoring, and prevention policies.fortra.com
• Cyberhaven — A modern data security platform that tracks how users interact with and move data across endpoints and cloud environments, focusing heavily on insider threat visibility and IP theft detection.
• Safetica — A budget-friendly, highly customizable endpoint-focused DLP solution that provides straightforward deployment and behavioral visibility for intellectual property.

To help narrow down which agent fits your environment, could you share:

• What operating systems do your endpoints run primarily (Windows, Mac, Linux)?
• Are you looking to consolidate with an existing platform (like CrowdStrike, Microsoft 365, or Palo Alto), or do you prefer a standalone DLP vendor?

Yes. If the problem is employees taking IP to competitors, you want more than traditional “DLP for compliance.” Look for endpoint DLP / insider-risk controls that can monitor and block exfiltration through USB, cloud uploads, browsers, personal email, clipboard, printing, network shares, and ideally provide investigation/evidence.

Vendors worth evaluating

For your particular problem

I'd shortlist Microsoft Purview, Digital Guardian, Forcepoint, Symantec and Proofpoint first.

The important distinction is that you're trying to answer:

“What did an employee do with our confidential IP in the weeks before leaving, and can we stop them from taking it?” rather than merely:

“Does this document contain a Social Security number?” For example, Microsoft Endpoint DLP can record and/or block copying protected material to USB, clipboard, network shares, printing, Bluetooth, RDP, restricted apps, and restricted cloud/browser destinations. Microsoft Learn Microsoft Learn It can also collect the original file as evidence for certain endpoint DLP events, which can be useful during an investigation.Microsoft Learn

One important caveat

DLP alone isn't the whole solution for employee-to-competitor theft. A departing engineer could potentially photograph a screen, manually retype information, use an unmonitored application, or access data they were legitimately authorized to see.

For this use case I'd pair endpoint DLP with:

• Insider-risk analytics — detect unusual behavior in the weeks preceding departure.
• File classification/labeling — identify engineering designs, source code, customer lists, pricing, strategy documents, etc.
• Offboarding controls — immediately tighten access when HR marks someone as departing.
• SaaS/cloud monitoring — personal Google Drive/Dropbox, GitHub, webmail, AI services, etc.
• UEBA — flag unusual volume, file access, downloads, compression, or transfers.
• Evidence/audit trail — preserve what was accessed, copied, uploaded, or transferred.

If you tell me your endpoint mix (Windows/macOS/Linux), Microsoft 365 vs Google Workspace, and whether the crown jewels are source code, engineering files, customer data, or documents, I can narrow this to 3–4 vendors and compare them specifically for preventing departing employees from taking IP.