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.