I find it very unlikely that this can happen mostly on
pokerstars platform which in my opinion is the most secure and reliable as it has an international name to ensure, The poker world is very large and there are players who play buy-in too high, I believe that if there is some kind of hack, who should be more concerned about are these players. But I sincerely believe that such a thing does not exist, or if there characterizes theft and this results in prison.
I think nobody wants to go through it.