“I bet he got ready for the massive voter fraud.”
PDJT is a tactician. A military school-trained tactician. And a jokester/prankster of high order (that’s why his dad sent him to military school, to knock that horn off of him, but it’s still there). And he is exceptionally intelligent.
I wager that besides using his trusted Executive resources, he put a lot of his own money out for legal research, linkage tracing and activity monitoring.
The Trump organization had Security services for his Hotel Chains. He probably still has access to it and would probably trust it more than either the backstabbing entrenched leadership of either the CIA or FBI.