Could be, but if that were true I would expect we would have seen a lot of publicity about such hacked info. Surely there's been no shortage of interest in finding "dirt" on Trump, his businesses, family, etc. The nasty political situation would be a great incentive for it. The absence of such data suggests decent security is in place.

That makes sense insofar as Trump runs large operations that has to require considerable computing resources to run them. He probably has top-notch people overseeing the data end of management and that would include maintaining security