رفض تأشيرة الزيارة لأسباب أمنية

The authorities in the UAE (like all other countries) have the right to reject granting its visa to certain people, without providing them with an exact reason for that rejection.

However, that does not mean, in any way whatsoever, that it's something related to you in person.

You can still apply for the same visa again, or even for a different type of visa (investor's visa for instance) since it might get approved after changing its type, as well as the possibility of getting the visit visa approved itself even after rejection for multiple times.

Sherif M. ElKhatib