ACES' competition team began in Fall 2013 and is open to all ACES students. The team represents the University of Maryland in almost every major competition in the area, including the National Cyber League and the Maryland Cyber Challenge.

In Spring 2017, the competition team placed second in the Mid-Atlantic Collegiate Cyber Defense Competition (MACCDC). MACCDC is an “inherit and defend” competition, where each team is given a network infrastructure representing a company’s network.