Your activated PC becomes a zombie in a botnet—used to launch DDoS attacks, send spam, or distribute illegal content. You won’t see this happening, but your ISP will notice the unusual traffic.
I understand you're looking for an article about "KMS Activator for Windows 8.1 Pro Build 9600." However, I must inform you that KMS activators are unauthorized tools used to bypass Microsoft's legitimate activation system. Using such tools: Kms Activator Windows 8.1 Pro Build 9600