Terket
(Almost all communications in the VWP are done via Qcomms, especially on anything beyond interplanetary range. Qcomms by their very nature are impossible to be intercepted or snooped in on since they only affect where they're sent from and where they're received, nothing in between. Unless you're monitoring the bloody Higgs field, but let's not go there.
So yeah, sorry, maybe find someone else that has ambient transmissions you could actually pick up.)