EchoMark personalizes or "marks" documents for each receiver using multiple methods, each designed to protect against different types of leakage.
The primary purpose of marking messages and documents is to deter leaks before they happen. By default, EchoMark includes a footnote at the bottom of every message and page indicating the name of the receiver. The footnote helps communicate that this document is not meant to be shared. If you don't want extra visible markings on your document, you can disable the footnote in Mark Options when sharing and even customize its message.
EchoMark personalizes each copy's metadata with subtle information that can be used to identify its intended receiver. This data travels with the file and is typically not viewed when the file content is viewed, but it can be easily accessed by any viewer of the document. Metadata marks are helpful in cases where an entire document is leaked. Read more on our Digital Stamp page.
When you mark messages or documents, EchoMark applies an invisible watermark to their contents that can be identified from an image of a fragment of the content. This visual mark is robust to leaks via screenshot, photo, and in some cases even copy/pasted text.
While Digital Stamp and Footnote personalization can be applied to every copy without a maximum, there are limits to the number of invisible watermarks that can be generated. There are limitations to the types of PDF pages that can be invisibly watermarked and you can read more about them in our Invisible Watermark page.
When using the Outlook Add-in, Gmail Add-on, or EchoMark app, you'll have the option to enable AI rephrasing. AI Rephrasing allows you to send distinct messages to each recipient while retaining the original meaning of your message. This provides the highest level of protection since a rephrased message can be detected even if a leaker re-types the message before leaking.