Yet one more reason why Microsoft should be worried about their market share…
“It generates a random watermark for each document, inserts that watermark into the document, saves all such processed documents in an output directory, and creates a log file which identifies the watermarks inserted into each document,” Scribbles’ user guide manual reads.
Scribbles Only Works with Microsoft Office Products
The user manual also specifies that the tool is intended for off-line preprocessing of Microsoft Office documents. So, if the watermarked documents are opened in any other application like OpenOffice or LibreOffice, they may reveal watermarks and URLs to the user.
Source: Source Code for CIA’s Tool to Track Whistleblowers Leaked by Wikileaks