CAPTCHA / challenge · Arkose Labs
Arkose Labs
Difficulty 4/5
FunCaptcha. Interactive 3D puzzles priced so that solving them at scale costs more than the attack is worth.
- TLS fingerprinting
- JS challenge required
- Behavioural scoring
- IP reputation weight: high
How it decides
-
Deliberately expensive interactive challenges — rotate the animal, match the shape.
-
Risk-based escalation: clean sessions see one puzzle, suspicious ones see a long chain.
-
Device fingerprinting through an `arkoselabs.com` iframe.
What you see when it stops you
- An `*.arkoselabs.com` iframe
- A `funcaptcha` reference in the page
- 3D rotation puzzles
Signatures the detector matches
Publicly observable artefacts Arkose Labs sends to every visitor. Paste a response into the analyser and these are what it looks for.
| Where | Signal | Weight |
|---|---|---|
| Page markup | Arkose Labs / FunCaptcha embed | 70 |
What actually gets through
-
Residential exits and real browsers, to keep the escalation ladder short.
-
Reduce how often you trip it — Arkose usually guards one specific action, so the win is avoiding the trigger rather than grinding the puzzle.
Not sure this is what
is blocking you?
Paste the response you actually got. The detector names the vendor from its own headers, cookies and challenge markup — no account, nothing uploaded.