Traditional tools can tell you a leak happened, but they can't tell you who did it. EchoMark closes that gap with invisible, individualized watermarking that deters leaks before they happen and identifies the source in minutes when they don't.
An insider threat is a security risk that originates from someone with authorized access to an organization's systems, facilities, or information — an employee, contractor, partner, or vendor — who exposes, steals, or misuses sensitive data. Because insiders already have legitimate access, the defenses built to keep outsiders out — firewalls, intrusion detection, network monitoring — largely miss this category of risk. Insider threats generally fall into three categories:
Every organization that shares sensitive information hits the same blind spot: risk management has to cover people already inside the perimeter. Board decks and legal memos are shared as identical copies to multiple users, so when one surfaces somewhere it shouldn't, there's no way to trace it to the source.
Therein lies the structural failure. Sophisticated leakers know that if they use personal devices to take photos of information, they can route around conventional security tools.


EchoMark embeds invisible, individualized watermarks into content across the ways your organization already shares information — email, documents, screens, and content delivered through the API — with no change to how people work. These marks use steganographic techniques, meaning they're not metadata that can be stripped, rather they travel with the content no matter how it's leaked.
When a leak occurs, the investigation is simple: upload the leaked artifact to EchoMark. The platform identifies whose copy was leaked, including a timestamp and confidence score, with forensic evidence, generally in minutes. EchoMark's watermarks survive being:
Most organizations can deploy EchoMark in hours. Schedule a personalized demo and we'll show you how EchoMark deploys across your existing email, document, and screen-sharing workflows, with no changes required for your team, and nothing visible for recipients.
EchoMark is built to work with the tools your organization already relies on. It integrates with Microsoft Exchange and Google Workspace for email and document watermarking, and with Microsoft Purview for organizations that want insider risk signals to flow into their existing compliance and investigation workflows, so adopting EchoMark doesn't mean replacing what's already in place.

EchoMark silently embeds invisible watermarks into every email, document, image, and screen.
A screenshot, photo, printout, or forwarded file appears outside your organization.
Submit the leaked artifact into EchoMark's investigation tool.
Identify whose copy was leaked, with a confidence score and chain of custody.
What is an insider threat?
An insider threat is a security risk that comes from someone with authorized access to an organization's systems or information — an employee, contractor, partner, or vendor — who intentionally or accidentally leaks, steals, or misuses sensitive information. Because the person already has legitimate access, insider threats are much harder to catch with traditional perimeter security than external attacks are.
How do you stop an insider threat?
Stopping insider threats requires both deterrence and attribution. EchoMark embeds an invisible, individualized forensic watermark into every document, email, and screen before it reaches a recipient. Knowing their copy is personally traceable deters most bad actors before they act, and if a leak does occur anyway, EchoMark can identify whose copy leaked, usually within minutes.
How is insider threat detection different from DLP?
Data loss prevention (DLP) monitors and blocks data as it moves through corporate networks, but it can't stop someone from photographing a screen with a personal phone, and it can't tell you who leaked a document once it's out. Forensic watermarking closes that gap: instead of trying to block the leak, it makes every copy individually attributable after the fact, so DLP and EchoMark work best together.
Can a leak be traced back to a specific employee?
Yes. EchoMark embeds a unique, invisible identifier into each recipient's copy of a document, image, email, or screen. When a leaked copy surfaces, uploading it to EchoMark matches the watermark to the individual recipient.
Does the watermark survive screenshots, photos, and printing?
Yes. EchoMark's watermarking is steganographically embedded in the content itself, not in metadata that can be stripped. It's designed to survive screenshots, phone photos of a screen, printing and photocopying, format conversion, and even manual retyping or AI-rephrasing of the text.
What should an organization do immediately after discovering a leak?
Preserve the leaked artifact exactly as it was found — don't crop, edit, or re-save it — then upload it to EchoMark. The platform identifies which recipient's copy was leaked, when it was created, and provides chain-of-custody documentation your legal or security team can use to decide how to respond.
Does EchoMark replace DLP, IRM, or SIEM tools?
No, EchoMark complements them. DLP blocks data from leaving the network, IRM controls who can open a file, and SIEM reconstructs system activity from logs. None of them can tell you who leaked a specific copy of a document once it's outside those controls. EchoMark fills that gap by making every copy individually traceable, regardless of how it left the organization.
What's the difference between insider threat detection and insider threat prevention?
Prevention tries to stop a leak from happening in the first place through access controls, security awareness training, and data loss prevention (DLP) policies. Detection indicates that something unusual has already occurred, such as an anomalous download or a policy violation flagged after the fact. Neither one answers the question that matters most once a leak has already surfaced: whose specific copy was it? That's the role of forensic attribution, which EchoMark provides by embedding an invisible, individualized watermark in every document, email, and screen.
See how EchoMark can be seamlessly integrated with your Microsoft Exchange or Google Workspace to automatically embed invisible watermarks in messages, images, and documents.