There are some rich, wealthy, greedy lawyers and accountants, become particularly rankled when they find that a seemingly modest living person is actually very wealthy. They see it as easy pickings and conscience free. A sort of "if they don't want it then I know someone who does".
By whatever means.
Of course it isn't just lawyers and accountants who are exclusive to this sort of thing, but they do have the skills and means of removing sums from others 'legally'.