Hackfortress is a unique blend of Team Fortress 2 and a computer security contest. Teams are made up of 6 TF2 players and 4 hackers, TF2 players duke it out while hackers are busy solving puzzles. As teams start scoring they can redeem points in the hack fortress store for bonuses. Bonuses range from crits for the TF2, lighting the opposing team on fire, or preventing the other teams hackers from accessing the store.

For DEF CON 28 Safe Mode:

Hack Fortress is still on! We're doing everything in the cloud.