Persephone Incident

From FEInfobase

The Persephone incident was one of the first recorded Harvester incidents, still officially denied by Starfleet and the Federation it has become the talk of the lower decks within the fleet and the talk of back water bars all over the Federation since for the last few years.

SS Persephone, a civilian frieghter was attacked by Harvesters and the entire crew killed but for one soul who managed to save himself by hiding in a transporter buffer.