As if protecting Chrome users from phishing and malware wasn’t enough, Google has today launched an entirely new “Safe Browsing” website that outlines the company’s policies, provides helpful documentation for webmasters, and provides access to the Safe Browsing APIs for developers…

Over the past year, Google has expanded what Safe Browsing warns and protects against, as well as the type of devices the protection is available on. The security feature will now label sites that only temporarily clean up harmful activity as “Repeat Offenders.”

First available on the web, Google has been expanding its Safe Browsing protections that warn users of nefarious sites to Android. Third-party developers will now have the ability to add the same URL checking to their Android apps with the new Safe Browsing API.

Rolled out earlier this year on the web, Gmail for Android will now warn users when they receive a message from an unauthenticated sender. Today’s other security update extends Safe Browsing protections to links from phishing and malware sites found in emails.

Google is extending their Safe Browsing feature that protects desktop users from malicious exploits on the web to mobile in Chrome for Android. Launched eight years ago, the feature has protected a billion desktop users from malware, unwanted software, and social engineering sites according to Google.

The feature was rolled out a long time ago as part of Play Services 8.1 and Chrome for Android 46, but was just officially announced today. It is enabled by default and users can check that it’s on by going to the Privacy menu in Chrome’s settings. When users come across an unsafe webpage, a bright red warning screen with a return to safety button will pop up first.

The team behind the feature notes the difficulties of bringing it over to mobile from desktop, mobile’s most limiting constraint being limited data and reduced data speeds. As such, every single bit of security data sent to the device is optimized. For instance, as social engineering attacks only happen in certain parts of the world, only devices in those regions will get those types of warnings. The security feature is also optimized from a memory and processor usage standpoint, making sure it does not reduce battery life.

Google announced today on its Online Security Blog that it’s expanding the Safe Browsing service that helps fight against malicious websites and warns users of potentially dangerous software when downloading files through browsers like Chrome. Rolling out next week, Safe Browsing is being updated to warn users against additional types of deceptive software:

programs disguised as a helpful download that actually make unexpected changes to your computer—for instance, switching your homepage or other browser settings to ones you don’t want… We’ll show a warning in Chrome whenever an attempt is made to trick you into downloading and installing such software. (If you still wish to proceed despite the warning, you can access it from your Downloads list.)

Google noted today that it’s “currently showing more than three million download warnings per week—and because we make this technology available for other browsers to use, we can help keep 1.1 billion people safe.” Some of those users are also receiving warnings from Safe Browsing through Firefox and Apple’s Safari browser.