EchoMark

Overview

EchoMark embeds invisible, recipient-specific steganographic watermarks in emails, documents, images and attachments to trace leaks, supports Exchange/Google Workspace and SecureView links, provides forensic matching, access controls, analytics, revoke options, and APIs for DLP integration.

From the official site

EchoMark embeds invisible forensic watermarks into sensitive emails, documents, images, and screens so information leaks can be traced back to the source.

The text above is quoted from this tool’s official website — the vendor’s own words.

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