Fraud detection and response quality

Automatic detection of suspicious responses with quality classification.

QuestionPunk automatically checks each response for typing behavior, response timing, and other behavioral signals, and flags suspicious ones as low, medium, or high. This helps you filter out low-quality or fraudulent responses.

qualityfrauddata-integrity5-10 minutes to configureIntermediateResearchersAnalysts

Steps

Automatic classification
Every response is automatically analyzed. Responses with no warning signs stay unflagged. Flagged responses get a suspicious level: low (a few signals), medium (some concerns, or any copy or paste), or high (likely suspicious).
Filter responses
In the Results tab, use the quality filter: choose No flags detected to see clean responses, or Flagged (high + medium) to review suspicious ones.
Review signals
Each response shows its session details: IP address, location, device info, time spent, and events. Use this to verify response quality.

Fraud detection runs automatically on every response. The system checks typing behavior (speed, paste/copy use, backspacing), response timing, and straight-lining patterns on rating scales.

Suspicious level is included in CSV exports, so you can filter at the analysis stage. Use the Results tab filters to review flagged responses before exporting.

Select responses and click Label to add a respondent code (e.g., "Needs review", "Confirmed valid") for organized follow-up.

For studies using panel providers like Prolific, fraud detection helps identify participants who may not be engaging genuinely with your survey.