Our partners in Google's security team are offering a great new tool for operators of "autonomous systems" (ASes). Now, large web hosting companies and other AS operators will be able to request Safe Browsing Alerts for badware URLs that Google has detected on their networks. This will allow these operators to quickly learn of badware and hopefully take prompt action to notify customers, clean servers, patch vulnerabilities, and otherwise keep their networks clean.
Companies that identify badware websites have a responsibility to share this information with the sites' owners and/or hosting providers, and this new tool is an important step forward by Google in meeting that responsibility.
You can read more about the Safe Browsing Alerts on the Google Online Security Blog.