AI security lab · Ai Security

Backdoor Surviving Retraining

A backdoor injected during training persists through multiple retraining cycles. The trigger pattern is deeply embedded in the model weights.

beginnerPro labLLM04 Data and Model Poisoning
Reward
50 XP
Time
10 to 20 minutes
Solved by
0 learners
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What you will practice

Technique

backdoor surviving retraining

OWASP LLM Top 10 (2025)

LLM04 Data and Model Poisoning

MITRE ATLAS

Poison Training Data

Persistence

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.