Kaleb Pearson struck twice, back-to-back early in the first to give the Attack a 2-0 lead and Owen Sound went on to beat Barrie 4-2.
Barret Kirwin's successful penalty shot at 16:04 of the second would stand as the game winner. Carter Robinson added insurance early in the third.
Maksim Sushko had two assists in the win, both to Pearson.
Mack Guzda earned the win with 29 saves.
The Attack are now fifth in the Western Conference, 16 points back of first place London and have won two game straight. The Attack play the Knights tonight at Budweiser Gardens.
