A recording has emerged in which
the McConnell camp discusses Judd and various tactics to use against her, should she run. The recording is apparently authentic, because the McConnell campaign has asked the FBI and the US Attorney's office in Louisville to investigate where the recording came from. Apparently the McConnell folks have felt that the recording must have come from wiretapping, which they view as a serious invasion of privacy (if it happens to them).
This is just a guess, but there probably ain't no actual wiretapping or secret high-tech surveillance involved. Portable phones can record things, and lots of people carry them, including people on McConnell's own team.