Shin Bet in Gaza

Israeli terrorists kidnap Palestinian from Gaza. By the way notice how actions in Gaza come under the Shin Bet's (internal security force) remit, I thought Israel left Gaza? How can you charge a foreigner with "affiliation with an illegal entity, contacting a foreign agent, servicing an illegal entity, conspiracy to violate national security and breaching national security by giving information to an enemy agent"? That makes no sense unless Israel still considers Gaza to be part of its territory and the people there subject to its laws.