Google today announced that the Google Safe Browsing service, which was first released for 2007, protects more than 3 billion devices. The number surpassed the 2 billions that the company said it protected in May of 2016.
Safe Browsing provides lists of URLs that contain malware or phishing content on programs Chrome, Firefox and Safari browsers, as well as Internet Service Providers (ISPs). 
The service can also be accessed through one public API or directly by manually checking from this URL any site you want. OR Google has expanded its Safe Browsing to its various products over the years, such as Android, Ads, Analytics, Gmail, Google Play, and so on.
It should be mentioned that most of the time, Safe Browsing protects users without blocking them. This means you just don't see any malicious search results, applications Android in Google Play, questionable messages in Gmail etc because they are just filtered. Other times, you present a placeholder action, like the one pictured below (on mobile):
You can see the above image on pages that try to make you install malware or download some other unwanted software. They are automatically blocked in Chrome, Firefox and Safari, although you can view the site manually if you wish. Web developers and application developers (such as Snapchat) integrate Google Safe Browsing into their applications to check URLs before being presented to their users.
As for AI, Safe Browsing (Google Safe Browsing) uses the engineering learning for many years to detect various types of threats.
Google did not elaborate on how the project would evolve, but noted that the service had to tackle today's "web" and that the team was "constantly evaluating and integrating new approaches to improving Safe Browsing".
