And thats the US Govt.
Generalising most people would state that virtually all botnets are bad. By this I mean that usually they are not used by their owners to attempt to look for a cure for cancer etc.
They are however used to launch mass denial of service attacks against .com websites and large corporate networks, even Governments.
They are not the kind of thing I would like shady Gov’t agencies to be involved in.
However it seems that Darpa/Arda are looking to create a tool to remotely take over existing botnets and become their new bot master.