Safari uses Google's "Safe Browsing" service that warns you if you are about to load a known scam / phishing site: https://safebrowsing.google.com/. If you have a particular website to report, do it here:
https://safebrowsing.google.com/safebrowsing/report_phish/
how to report fraudulent website on safari
Apple is not in charge of the Internet. In fact no one is in charge of the Internet. Nobody controls it — not on a worldwide scale that is. Anybody can create any website for any reason and make it publicly available to everyone. That's what makes the Internet such a wonderful idea.