It used to be a big thing; a major attraction for international depositors.

But it's beginning to be removed under the current situation, because they want to disallow (criminalize) people from transferring their money out of the country (to protect it)

It was, but 9-11 started a major reversal in that, which got worse as terrorism financing became a target for the us

I think Lebanon now reports all transactions to the US so secrecy veil has been finished for some time.