This course will guide you through the Watermarking Tool developed by ATOS, which enhances the security and traceability of digital datasets by embedding invisible messages into images. The tool assists in tracing data ownership and downloaders, providing legal protection, and features an adjustable speed-robustness trade-off along with robustness testing against various attacks. Common attack types include compression, geometric transformations, noise addition, and filtering. The workflow involves uploading an image, inputting a message, customizing settings, watermarking the image, and testing its resilience against attacks. This tool is valuable for secure dataset sharing, ensuring data integrity, and promoting international cooperation.