For this, you have to complete one of the four GridNode missions without alerting K-Sec - that is to say, without tripping any of the lasers on the way to the main console. GridNodes are vertical mazes that use freerunning to varying complexities to make you think about your pathing, rewarding you with Fast Travel access to the hubs within the nearby area.
The first one acts as a tutorial and should be the one you use to get this! None of the lasers move, and the path is fairly linear. You can repeat this one if you need to under the Side Missions tab - Gridnode Run.