ManTech EchoMark is a data leak prevention solution that embeds invisible watermarks and visible footnotes into emails and documents to detect and prevent insider threats and intellectual property theft. The product automatically integrates with email systems to apply watermarking technology that remains traceable even when content is captured via screenshots or photos. The solution provides visual cues to recipients indicating that content is intended for private use only, while simultaneously embedding forensic watermarks that enable leak source detection. When unauthorized sharing occurs, the embedded watermarks allow organizations to trace the leak back to its source. EchoMark operates by automatically processing outbound messages and documents through integrated email platforms, applying both visible and invisible protection mechanisms without requiring manual intervention. The visible footnotes serve as a deterrent and reminder to recipients about data handling responsibilities, while the invisible watermarks provide forensic capabilities for post-incident investigation. The product is designed to maintain collaboration workflows while protecting sensitive information, allowing organizations to share data internally with reduced risk of unauthorized external disclosure. The watermarking technology works across different capture methods, including digital screenshots and physical photographs of screens, providing comprehensive coverage against various leak vectors.