@Wolvenworks this isn't a rpg item box world.
In this case, quested subjection are done like this.
Take away a mark, and valued items. In cases for giants.
Defeat it, take the mark, and request for a team to dismantle and retrieve it.
It's too big to steal without notic. Let alone man power to steal it.
Let along information and time to steal it.
One possible way is to ambush the one who kill it, but that means you need to be stronger than them first.
And if so, you might as well just hunt one on your own, less hassle.