Google is expanding the amount and kind of data that it supplies to network operators about potentially malicious activity happening on their networks and elsewhere. The company is now giving operators information on dedicated domains that are being used for malware hosting and distribution. The Google Safe Browsing Alerts are meant to give operators an early heads-up when a site on their network has been compromised and is being used either as an attack site or as another piece of an attack chain. A malware distribution site is different from a compromised legitimate site in that it is set up for the specific purpose of hosting and distributing malware.
Source: https://threatpost.com/google-expands-safe-browsing-alerts-include-malware-distribution-sites-120211/75950/