A satanist could get ahold of It without stealing It from the tabernacle.
And that is why people should not take Communion in the hand. It is too easy for a satanist to pocket.
We stand to the side during Communion to watch and ensure each person consumes the host before returning to their seat. Have never had a problem but there are enough stories about Satanists trying to get their hands on one that you must remain on guard.