Project Shield, created by Google Cloud and Jigsaw and powered by Google Cloud Armor, provides free unlimited protection against DDoS attacks, a type of digital attack used to censor information by taking websites offline.

At a glance

Operator: Google
Type: Security

How Centinel checks it

User agent: The request calls itself this crawler. Anyone can send the same string.

ProjectShield Url Check publishes nothing Centinel can check a source against, so a match reports the name and leaves the source unconfirmed. The match tokens, verification domains, and address feeds are not published here.

Allowing or blocking it

The crawler object in the /validate response sets access_allowed to true only for a verified source that your tenant allowlists. A policy rule can allow or block this crawler by its category, Security.

Back to the crawler catalog