Crawlers source question

Known bot traffic (in both Google Analytics 4 and Universal Analytics properties) is identified using a combination of Google research and the International Spiders and Bots List, maintained by the Interactive Advertising Bureau.

I would like to know what is the source of crawlers for Piwik Pro?

Hi. It’s a list maintained by Piwik PRO. I’ll request a new help center article with more details on that.