After you start download. There's 70% the downloadmanager will leave a trail for people to track you. You can log delete or bounce. The file you download will also shown in the server ( where you download at ). So the person will make notice and find the hacker.
There's 50% trace-able for other hacker to track you. Not possible to install on Public and Secret server. Only private server and allow of install which restrict some people of downloading other of their software into secret server for Malware Farm.