Data Security Center (DSC) allows you to embed watermark information into the data to be distributed. If a data leak occurs, you can extract watermark information from the leaked data at the earliest opportunity. By reading the extracted watermark information, you can trace the data flow process and identify the organization or user that is responsible for the data leak. The watermark information that is embedded into the data to be distributed does not affect the use of the data. This topic describes how to extract watermark information from a data source.
Background information
- Security: The watermark information that is embedded into the data is not lost even if the data is modified. This ensures that the watermark information can be accurately identified.
- Transparency: The watermark information that is embedded into the data is imperceptible to you and does not affect the use of the data.
- Detectability: You can extract the watermark information from data fragments and trace the source of data leaks with a high success rate.
- Robustness: You can extract the watermark information from the data even if the data is subject to malicious attacks.
- Low error rate: DSC provides a well-designed rule for extracting watermark information. This minimizes the probability of errors in data tracing.
Limits
You can extract watermark information only from data in ApsaraDB RDS databases.