Clearly, Google has 100 percent faith in its technology.

Whether subtle hacks will be picked up is another lingering question. Site hacks beyond and above simple graffiti sometimes involve search engine optimization (SEO) abuse, sometimes called ‘spamdexing.' This creates false pages on the site that link to a malware site in order to boost its ranking in search results.

Additionally, hackers often insert deep within the directory structure, making them almost invisible to those who don't go through the site daily with a fine-toothed comb, or monitor the server logs in a similar fashion. If something like a content management system is installed, it's often impossible for anybody other than an expert to spot changes.

Keeping an eye on a site to watch for hack attacks or is a difficult issue for smaller businesses, which have to rely on third-party hosting services that enact security policies they can't control. Additionally, smaller businesses may lack dedicated webmaster staff, with Website maintenance either deferred to the or handed off to a .

Although this new feature from Google might indicate a potential solution to the problem, it's unclear if Google will inform Website owners in a timely fashion if their site is suspiciously altered. As such, it can't be relied upon.