Page:Intelligence Community Assessment - Assessing Russian Activities and Intentions in Recent US Elections.pdf/3

 * Intelligence Community judgments often include two important elements: judgments of how likely it is that something has happened or will happen (using terms such as “likely” or “unlikely”) and confidence levels in those judgments (low, moderate, and high) that refer to the evidentiary basis, logic and reasoning, and precedents that underpin the judgments.

Determining Attribution in Cyber Incidents
The nature of cyberspace makes attribution of cyber operations difficult but not impossible. Every kind of cyber operation—malicious or not—leaves a trail. US Intelligence Community analysts use this information, their constantly growing knowledge base of previous events and known malicious actors, and their knowledge of how these malicious actors work and the tools that they use, to attempt to trace these operations back to their source. In every case, they apply the same tradecraft standards described in the Analytic Process above.


 * Analysts consider a series of questions to assess how the information compares with existing knowledge and adjust their confidence in their judgments as appropriate to account for any alternative hypotheses and ambiguities.
 * An assessment of attribution usually is not a simple statement of who conducted an operation, but rather a series of judgments that describe whether it was an isolated incident, who was the likely perpetrator, that perpetrator’s possible motivations, and whether a foreign government had a role in ordering or leading the operation.