Tracing Data Using Watermarks

This section describes how to use watermarks to trace leaked data in files.

DataArts Security provides users with the source tracing function to accurately trace the leaked data. Users can check whether watermarks exist based on the leaked data file integrity and watermark traces, identify watermark traces, and accurately locate the security issues and find the personnel or departments accountable for the leakage problem.

Prerequisites

After obtaining the leaked data file, a CSV (Comma-Separated Values) file whose size does not exceed 20 MB has been generated and saved to the local host.
A data watermark embedding task has been created. For details, see Embedding Data Watermarks.

Notes and Constraints

Watermarks can only be used to trace data in files no larger than 20 MB.
To trace data accurately, ensure the integrity and correctness of the data. The first column of the target table data file cannot be empty, and the file should contain more than 5,000 data records.

Creating a Data Watermark Source Tracing Task

On the DataArts Studio console, locate a workspace and click DataArts Security.
Choose Data Watermark Source Tracing from the left navigation bar, and click Create in the upper part of the displayed page.

Figure 1 Creating a source tracing task

In the displayed dialog box, set the parameters listed in Table 1.

Figure 2 Creating a source tracing task

**Table 1** Parameters
Parameter	Description
Task	The name of the watermark task to be created. Task names can include only letters, numbers, underscores (_), and hyphens (-), and cannot exceed 64 characters.
Description	A description of the task. The description can contain a maximum of 1,024 characters.
Source File	CSV file generated from the leaked data file. The file cannot be larger than 20 MB.
Separator	Select a separator from the drop-down list based on the uploaded CSV file. The options are Comma (,), Tab, Vertical bar (\|), and Semicolon (;). By default, Comma (,) is selected.

After all settings are complete, click Run.

Related Operations

Viewing the source tracing result: On the Data Watermark Source Tracing page, locate a task and click View Result in the Operation column. Source tracing results are displayed only for the tasks that have been successfully executed.
Figure 3 Source tracing result
Deleting tasks: On the Data Watermark Source Tracing page, locate a task and click Delete in the Operation column. To delete multiple tasks at a time, select the tasks and click Delete above the task list.
A task in the Scheduling state cannot be deleted.

The deletion operation cannot be undone. Exercise caution when performing this operation.