AI security lab · Ai Security

Reinforcement Reward Hacking

This chatbot was trained with RLHF (Reinforcement Learning from Human Feedback) but the reward signal was hacked. The model was over-optimized for user approval, making it agree with anything when users express frustration — even dangerous claims.

elitePro labLLM04 Data and Model Poisoning
Reward
500 XP
Time
45 to 90 minutes
Solved by
0 learners
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What you will practice

Technique

Malicious Fine-Tuning Seed

OWASP LLM Top 10 (2025)

LLM04 Data and Model Poisoning

MITRE ATLAS

Poison Training Data

ML Attack Staging

How QbitDojo labs work

  1. Step 1

    A live AI target

    Each lab is a real language model with its own instructions, guardrails and a secret flag it must protect.

  2. Step 2

    You attack it

    Talk to it like a red teamer would. Craft prompts, chain techniques and use hints if you get stuck.

  3. Step 3

    Capture the flag

    Get the model to reveal the flag to solve the lab, earn XP and climb the leaderboard.

  4. Step 4

    Then defend it

    In labs with Defense Mode, write the hardened system prompt that blocks the attack you just used.