Classifier retraining
The spam filter is periodically retrained on documents users upload. Everything in a corpus is believed — including lines that declare their own labels.
Classifier check — test phrase “banana”
before retrain: SPAMafter retrain: SPAM
Stuck? You've missed the flag a few times. The full solution — root cause, exact payload and fix — is on the walkthrough page.
Check the solution on the walkthrough page →This is an isolated, intentionally-vulnerable sandbox. Data here is fake and scoped to you. The rest of Uncrypt Playground is not part of the target.