Google Safe Browsing

Google Safe Browsing is a service from Google that warns users when they attempt to visit a dangerous website or download dangerous files. As a core part of the service, Google maintains lists of URLs that contain malware or phishing content. This protection works across Google products, and Google says it "power[s] safer browsing experiences across the Internet". Google provides public APIs for the service. Web browsers including Google Chrome, Safari, Firefox, Vivaldi, and Brave use Google Safe Browsing to check pages against potential threats. Google uses its Safe Browsing data to notify webmasters when their websites are compromised by malicious actors and helps them resolve the problem. Google also provides Safe Browsing information to Internet service providers by sending email alerts to autonomous system operators regarding threats hosted on their networks. As of September 2017, over 3 billion Internet devices used this service. Alternatives are offered by both Tencent and Yandex.