Trump's pals have been after Bezos for a while. Trump doesn't like The Washington Post reporting.
Surprising someone as powerful as Bezos could have his privacy violated like this.
Bezos's Medium.com piece:
Here’s a piece of context: My ownership of the Washington Post is a complexifier for me. It’s unavoidable that certain powerful people who experience Washington Post news coverage will wrongly conclude I am their enemy.
President Trump is one of those people, obvious by his many tweets. Also, The Post’s essential and unrelenting coverage of the murder of its columnist Jamal Khashoggi is undoubtedly unpopular in certain circles.
Trump and the Saudis think Bezos is to blame for the news media doing their job.