Communications between Donald Trump and his staff were being electronically monitored both while he was a candidate and while he was President. They probably are still being monitored. It doesn’t matter that the monitoring was incidental, it was happening.
At any rate, all of this has been going on while Trump was under Secret Service protection. With that in mind, there are only two possibilities:
The Secret Service was aware of the monitoring and allowed it to happen, or:
The Secret Service never detected the intrusion, interception, and monitoring of some of the most secret and supposedly guarded communications in the entire nation. If someone could read White House communications without the knowledge of the Secret Service before passing that information to Hillary, then any other nation (or even large company) with sufficient money and technology could do so as well.
So which is it: Is the Secret Service untrustworthy, or incompetent? In either case, they are wholly incapable of protecting the White House. The even more interesting question is who was behind it? Was it Hillary? Obama? Someone else?
Answer that question, and you will also know who is now calling the shots.