The last week Google has strengthened the way it displays alerts in they Safe Browsing system for administrators, adding information about unwanted and malicious software distribution sites, as well as those sites created to carry out social engineering attacks.

Google created this service, which notifies network administrators, after observing the potentially harmful URL into their networks in 2010. In the future, administrators will be alerted when users are on sites that can trick them to provide sensitive information such as passwords or fool them to download unwanted software.
Administrators will be also alerted when users visit sites that have a reputation for performing ads injections and distributing malware, Trojans and viruses.

Nav Jagpal a Google software engineer, wrote in his security blog. “Network administrators can use the data provided by our service to gain insights into the security and quality of their network. By working together, we can make it more challenging and expensive for attackers to profit from user harm.”

Previously only service administrators was notified if one of its users visit a page that was seen distributing malicious software downloads or performing exploits. The Safe Browsing by Google, which helps protect users of Mozilla Firefox and Apple Safari, Google Chrome besides, in addition to Google Chrome, still has tremendous reach, nearly one billion users. According to the company Transparency Report last week, more than 57 million users visited an insecure site and were reported by the service.

The service is in constant flux. In February, Google improved its API to detect misleading embedded content, such as buttons or download ads content that trick users to share passwords or call technical support.

The Safe Browsing Alerts for Network Administrators, an extension of this tool offered to webmasters, is less popular. However it has been successful. Jagpal claims that monitored 22,000 autonomous system numbers (ASNs) and sends 1300 daily reports to 250 webmasters who use it.