Wind Farm Traitor
This is an unmarked quest in the Varren's Scalp windfarm on Kadara.
On the west side of the complex, you'll meet a krogran named Rotan. He's the security around here, and while he thinks the farmers are idiots, it is weird that raids keep happening when Rotan's not around (even weirder- the farm apparently provide energy to Kadara Port, and *no one* there can spare *one guy* for security?)
Go through the door behind him and you'll find a terminal detailing one of the farmer's dealings with the raiders to feed her addiction. Find the traitor herself still blissed out on her drug of choice.
Talk to Rotan to reveal the connection, and reap a small XP reward.