Google is definitely not a company known for security or privacy. There have been privacy concerns with products like Google Wave and security issues with allowing unsafe ads in Adsense. The lack of interest, however, is most obvious in Google Play. The company has rules for what must be included to submit an app. However, those rules are not enforced and unsafe apps flood the marketplace. Malware numbers are in the millions in the Play Store.
If you've interacted with the Play Store at all, you know that this could affect millions of applications that have either been lax on supporting, or have ignored the requirement entirely. Obviously this is good news for users of Android and Chrome OS.
People who are not terribly tech savvy are often tricked into downloading apps that look legitimate, but access your contacts, your account and other sensitive information without telling you what they intend to do with that data. Hopefully this change in policy at Google will begin to put an end to this deceptive practice that is so prevalent on the platform.