Is this site behind PerimeterX?
Now branded HUMAN Bot Defender. Known for the "Press & Hold" puzzle on sneaker and retail sites.
Free diagnostic • Confidence scoring • Signal-by-signal breakdown • Recommended client configuration
Verification keeps this tool free from abuse. For diagnostic and developer use only — run checks on sites you are authorised to access.
What is PerimeterX (HUMAN)?
PerimeterX (renamed to HUMAN Security in 2022, product name Bot Defender) protects e-commerce, classifieds, and account-takeover-sensitive sites. It is recognisable by its "Press & Hold" challenge — a behavioural check instead of an image puzzle.
Read the full PerimeterX (HUMAN) glossary entry
How PerimeterX (HUMAN) protects sites
- ›Press & Hold behavioural challenge
- ›`_px*` cookie family (`_pxhd`, `_pxvid`, `_px3`)
- ›JavaScript SDK collecting mouse/keystroke entropy
- ›Server-side fingerprint + risk classification
- ›Block, challenge, or "captcha" verdict per request
Detection signals we look for
- ✓
_pxhdor_px*cookies in response - ✓Inline script reference to
client.px-cdn.netorcollector-PX*.perimeterx.net - ✓
x-px-*headers - ✓Block page mentioning "Press & Hold"
Recommended Scrappey client configuration
For authorised access only — your own properties, contractually permitted scraping, QA, monitoring, accessibility audits, and similar use cases. Always respect the site's terms of service and applicable law.
- →A browser context is required — the JS SDK must execute correctly for the device to be recognised.
- →Avoid automation tells (headless flags, missing window properties); PerimeterX inspects these.
- →Use residential proxies and keep per-IP session counts low.
- →Delegate challenge handling to Scrappey with
antibot: "perimeterx".
Create a free account to run the configuration above — 150 credits included, no card required.
PerimeterX (HUMAN) FAQ
Is PerimeterX the same as HUMAN?
Yes — PerimeterX rebranded to HUMAN Security after acquiring White Ops. The product is now called Bot Defender, but most sites still ship the legacy _px* cookies, so detection works the same way.
Why does Press & Hold reject scripted input?
It scores the *manner* of the hold — entropy, pressure curve, micro-movements. A scripted mouse-down/mouse-up sequence is trivially recognised as non-human. You need a real interaction or Scrappey's built-in handler.
Related concepts
Deeper reading on the techniques and signals that surround PerimeterX (HUMAN).
Concept map
How anti-bot protection fits together
Hover a vendor or technique to see the connections. Click any node to read the full glossary entry. The lines show which detection techniques each vendor leans on.
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