The link in the first half of the sentence you quoted, leads to a Cloudflare page that has lots of info which may answer your question. "Cloudflare Area 1 is a

The link in the first half of the sentence you quoted, leads to a Cloudflare page that has lots of info which may answer your question. "Cloudflare Area 1 is a cloud-native email security platform. It crawls the Internet to stop phishing" and also "Proactively hunt for attacker infrastructure and campaigns with our massive-scale phish indexing." and also "Scans the Internet for attacker infrastructure, sources, and delivery mechanisms to stop phishing attacks days before they hit the inbox."