Wikileaks has published a new piece of the Vault 7 leak that details a CIA project codenamed Scribbles. Scribbles is a software allegedly developed to embed web beacon tags into confidential documents aiming to track whistleblowers and foreign spies. The Scribbles software was written in C# programming language and generate a random watermark that is inserted in each document. The latest released version of Scribbles (v1.0 RC1) is dated March 1, 2016, the date suggests it was used until at least last year.”]
Source: https://securityaffairs.co/wordpress/58518/hacking/wikileaks-cia-scribbles.html