WikiLeaks releases source code for ‘Scribbles’ software that allegedly embeds ‘web beacon’ tags into confidential documents. The tool is intended for off-line preprocessing of Microsoft Office documents. CIA says Scribbles is a “batch processing tool for pre-generating watermarks and inserting those watermarks into documents that are apparently being stolen by FIO (foreign intelligence officers) actors” The latest released version of Scribbles (v1.0 RC1) dated March 1, 2016 indicates it was in use up until at least last year and seemingly meant to remain classified until 2066.
Source: https://thehackernews.com/2017/04/wikiLeaks-scribbles-cia-whistleblower.html