Speak with Mairi Hendry in Iceshard Keep. She's on the ice ledge surrounding the building at ( -703, 120, 222 ) /waypoint -703, 120, 222.
Eavesdrop on the conversation between Praefectus Krieger and Vindicator Soren - stand in the hallway close enough that you can 'hear' the conversation, but far enough away that you don't draw aggro. This step auto-updates when the conversation is completed
Plant anti-Kromzek propaganda around iceshard keep. The places to place it are large sparkling blue sections of the wall.