I can't believe someone actually suggested you get a Corsair bribe. If I catch you without NPC's firing on you and they should - I'ld report you.
Also, everyone should do that.
You don't CHEAT with NPC's, they're not nuisance they're there as part of the damn setting that is discovery, othervise they'ld be gone.
They're there to stop the trader from fleeing.
Got to love when trader runs from me in omega 3, only to have him stopped at next tradelane by pack of Corsair NPCs.