Until now, Google notified webmasters about their potentially hackable websites; Now, they’re expanding to cover other types of web applications for e.g., more content management systems (CMSs), forum/bulletin-board applications, stat-trackers, and so on, with a goal ‘not just to isolate vulnerable or hackable software packages,’ but to also ‘notify webmasters about newer versions of software packages or plugins they’re running on their website’ via a message in Webmaster Tools. Google identify sites to notify by parsing source code of crawled web pages for included meta tag that specifies version number. “There’s divided opinions about including a version number in source code, because it lets hackers or worm writers know that website might be vulnerable to a exploit. But Matt Mullenweg pointed out, “Where [a worm writer’s] 1.0 might have checked for version numbers, 2.0 just tests [a website’s] capabilities…”. Meanwhile, the advantage of a version number’s that it can help alert site owners when they need to update their site. So, including a version number can do more good than harm,” Google.