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ProjectShield-UrlCheck

recommended: allow
Operated by Google security

ProjectShield-UrlCheck is a security scanner that monitors websites protected by Google's Project Shield service, checking for malicious traffic and DDoS attacks to ensure continuous protection.

What it does

ProjectShield-UrlCheck's cadence depends on how the scan is configured. Continuous monitoring may run daily or hourly, while a one-time or internet-wide scan may sweep once and disappear.

How to identify it

User-agent contains any of:

  • ProjectShield-UrlCheck

robots.txt

Well-behaved crawlers honor robots.txt. To control ProjectShield-UrlCheck:

Allow full access

User-agent: ProjectShield-UrlCheck
Allow: /

Block entirely

User-agent: ProjectShield-UrlCheck
Disallow: /

Grey-area scrapers ignore robots.txt. Botscope enforces your policy at the edge or origin regardless — see how →

See ProjectShield-UrlCheck on your own site

Botscope shows every bot and AI agent hitting your site — and lets you allow, challenge, or block each one. Observe first, enforce when you're ready.

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