The torrent is here if anyone wants to take a peek (for research / meta data purposes only of course) magnet:?xt=urn:btih:N5BLZ6XECNEHHARHJOVQAS4W7TWRXCSI&dn=twitch-leaks-part-one&tr=udp%3A%2F%2Fopen.stealth.si%3A80%2Fannounce
Be careful with this, they're probably watching peer lists, AFAIK it's illegal to download stolen data but IANAL.
It is illegal to initially steal data.
But can you clarify which law would be violated by downloading it? And by "illegal" do you mean civil or criminal law?