alien piracy

if there is alien piracy that goes on seemingly unhindered 

in some galaxy or between galaxies 

then that could be considered troubling 

but if aliens need somewhere to live 

and are able to pay for their living 

then it's up to them to avoid contact with authorities 

if they have reasons to do so 

it's illegal to trade in stolen goods 

and it's illegal to use stolen goods as payment 

if various aliens or groups of aliens owes me money 

then it's up to them to fix that