Forensic watermarking embeds an invisible, individualized identifier into every copy of an email, document, image, or screen. The mark is imperceptible to readers, survives screenshots, photos, and printouts, and identifies exactly whose copy leaked — in minutes, not weeks.
By personalizing content with multiple types of invisible marks, EchoMark helps foster a sense of responsibility among recipients of private information.
EchoMark employs a variety of techniques to add identifiable information to your documents and messages without harming the consumption experience. Collectively, we refer to these as marks and each type is targeted at a different leakage method or behavioral outcome.
EchoMark can integrate directly with your Microsoft Exchange or Google Workspace accounts. There is no interruption to the content being shared and no user intervention is required.
Every recipient receives a uniquely marked copy. When one of them surfaces where it shouldn't, submit the artifact — a screenshot, a photo of a screen, a printout, or even copy-pasted text — and EchoMark identifies the source.
EchoMark silently embeds invisible, individualized watermarks into every email, document, image, and screen. No client software, no change to how your teams work.
Submit the leaked artifact into EchoMark's investigation tool — a screenshot, a photo of a display, a printout, a forwarded file, or retyped text.
Identify whose copy was leaked, with a confidence score and chain-of-custody documentation built to stand up to scrutiny.
What is forensic watermarking?
Forensic watermarking embeds an invisible, individualized identifier into the content itself — an email, document, image, or screen — rather than into its metadata. Every recipient receives a copy that looks identical but is uniquely marked. When information leaks, the mark identifies which copy it came from.
How does forensic watermarking work?
EchoMark generates a unique mark for each recipient at the moment content is shared, then embeds it steganographically in the content. Because the mark lives in the content rather than around it, stripping metadata, re-saving, or converting the file does not remove it. To resolve a leak, upload the leaked artifact and EchoMark matches it back to a single recipient.
What is the difference between visible and invisible watermarking?
A visible watermark is the same for everyone and is meant to deter reuse or assert ownership; it obscures the content and can be cropped out. An invisible forensic watermark is unique to each recipient, imperceptible to readers, and answers a different question — not who owns this, but whose copy leaked. Many organizations use both, and EchoMark supports a visible footnote alongside invisible marks.
Is forensic watermarking the same as steganography?
Steganography is the broader practice of hiding information inside other information. Forensic watermarking is a specific application of it, aimed at attribution. EchoMark uses steganographic techniques to embed per-recipient identifiers that survive real-world copying.
Can a forensic watermark survive a screenshot or a photo of a screen?
Yes. EchoMark's watermarks are designed to persist through screenshots, camera photos of a display, black-and-white printouts, photocopies, and low-resolution reproductions — the methods sophisticated leakers most often use. Text marks can also survive retyping on another device and AI-based paraphrasing.
How is forensic watermarking different from DLP?
DLP inhibits data from leaving the network, but it cannot prevent an offline leak by someone with legitimate access — for example, photographing a screen with a personal phone. Forensic watermarking takes the opposite approach: work continues normally, and every copy remains individually attributable after the fact. The two are complementary.
What are the benefits of forensic watermarking?
Deterrence, attribution, and recourse. When recipients know every copy is traceable, casual sharing drops. When a leak does happen, investigations that once took weeks and ended inconclusively resolve in minutes. And chain-of-custody documentation with a confidence score supports action against a bad actor or demonstrates due diligence to regulators.
