Backdoors & Breaches — Official Incident Response Card Game

Backdoors & Breaches is the original incident response card game created by Black Hills Information Security and Antisyphon Training. This site is the official online home for the game — browse the Core Deck, run Official Competitive matches, scan physical cards, share lab resources, and turn cybersecurity tabletop exercises into a structured, cooperative card game.

What is Backdoors & Breaches?

An Incident Captain crafts a hidden scenario from Attack, Pivot, Persistence, and C2 cards. The Defenders use Detection cards, dice rolls, and discussion to uncover what happened, contain the breach, and learn real incident response procedures along the way. A typical game runs 30–60 minutes for 2–8 players.

What you can do here

• Play Official Competitive Backdoors & Breaches online against friends or open lobbies.
• Browse the Core Deck — the full glossary of Attack, Detection, Incident, and Inject cards.
• Browse the Official Competitive cards from the latest expansion.
• Scan a physical Backdoors & Breaches card with your camera to open its digital details instantly.
• Explore the Lab Resources for educators, blue teamers, and students.
• Meet the team building the official Backdoors & Breaches platform.