I did something like this ages ago and attracted some hackers that in turn attracted the FBI to my house. I suppose in hind-sight I should have made them sign legal documents and had them notarized but I still would have had to deal with the feds. It didn't end with that. They also pissed off all the locals and the local police offered to drive them far out of the county and just leave them somewhere but I ended up paying to put them up in a hotel and paid to store their stuff in a storage at the advice of my lawyer. I guess all I am suggesting is to be careful.