This can be earned shortly after you return to Dorsey Square to try to retrieve the item from Colt's vault in his flat.
*** Spoiler - click to reveal ***Once you retrieve the code from a prior area Loop you are given the code from a journal entry. You will return to the Flat to find that Julianna has opened the vault and stolen what you were trying to get. She will then spawn outside of the Flat on the rooftop along with other enemies. You are then tasked to hack a radio transmitter to open the tunnels of the area to escape. This is your first encounter with the Julianna invasion. I cannot specify whether or not she was controlled by a real player or not on this scripted event but she was fairly easy for me. I was able to pick her off without even leaving the Flat by shooting through the window at her.