I would be curious as to the agenda of these "Shadow Brokers" it all sounds very Gibsonesque. Recent events have made Neuromancer seem more and more prophetic to me.
They were hackers who acquired a trove of state secrets and were looking to make a quick buck. I've linked an archive of their initial statement below. I think it speaks volumes about how far the NSA can be trusted that these people were the ones to leak the tools instead of a state actor or someone previously known.