Safe Browsing is a collection of Google technologies that hunt badness on the internet. It identifies sites that might try to phish you, or sites that install malware or install undesirable software. The technology is used across many of Googles products, including Gmail and Google Play Protect. The internet is at the start of another major shift. Were continually evaluating and integrating cutting-edge new approaches to improve Safe Bowinging. We built new technologies to make its data as compact as possible, and we make sure this data is compressed.”]
Source: https://security.googleblog.com/2017/09/safe-browsing-protecting-more-than-3_11.html