These kind of stories end up being a Netflix TV series. Looking forward...
"Internal Documents Show How Close the F.B.I. Came to Deploying Spyware - The New York Times"
"Christopher Wray, the F.B.I.’s director, told Congress last December that the bureau purchased the phone hacking tool Pegasus for research and development purposes."
https://www.nytimes.com/2022/11/12/us/politics/fbi-pegasus-spyware-phones-nso.html