QUIRSO — Cyber Security for Germany

HALLOWEEN 2026 · QUIRSO IR ARENA

The night shift challenge.

Choose your side. Contain the incident—or push the response to its limits. Higher difficulty earns more points.

All missions are open · enter the challenge.

Sign in & enterHalloween leaderboard →

HALLOWEEN 2026 · YOU VS THE BOT

IR ARENA

Attack. Adapt. Recover.

Choose Red or Blue. Face the bot, contain the crisis and compete for a place on the Halloween leaderboard.

Choose your mission Actions & counter-moves →How to play →
15 missionsRED / BLUE One Halloween leaderboard.

Actions & counter-moves

Explore all 85 Red and Blue actions: what they do, what they help with, what remains, and how the other team can respond.

Selected mission: Ransomware at Nordlicht Maschinenbau

FIRST RESPONSE

Learn by containing your first incident

Six guided decisions. Learn the controls before your first scored mission.

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HALLOWEEN 2026

Choose your mission

Start with Foundation and work up to Advanced. Every mission is a solo game against the bot.

Your side
Difficulty

AP allowances are per round. Blue starts with 8 budget points and receives 2 more each round.

BLUE · StandardRansomware at Nordlicht Maschinenbau12 rounds · 100 points for a win
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Steps 1–4 · Foundation

Contain incidents, protect data and recover services.

Steps 5–8 · Intermediate

Remediate accounts, sessions and cloud trust.

Steps 9–15 · Advanced

Handle providers, dependencies, OT and destructive recovery.

How Halloween scoring works
Leaderboard points by difficulty
DifficultyWinFinish without a win
Supported5010
Standard10025
Expert15040

Only your highest score per mission and side counts. Replays can improve it; scores do not stack.

Full-length missions, with optional random events off. Only your best result per mission and side counts. The tutorial is unranked.

HOW TO PLAY

Choose a side.
Take on the bot.

01

Choose your mission

Pick Red or Blue, your difficulty and a mission. The bot plays the other side.

02

Make your move

Spend action points, investigate evidence and respond to the incident. Red and Blue each take one turn per round.

03

Review and improve

Finish the mission, review your decisions and improve your best score on the Halloween 2026 leaderboard.