Google Security – Android Security 2015 Annual Report
Enhancing Google’s services to protect Android users
In the last year, Google significantly improved machine learning and event correlation to detect potentially harmful behavior.
Google protected users from malware and other Potentially Harmful Apps (PHAs), checking over 6 billion installed applications per day.
Google protected users from network-based and on-device threats by scanning 400 million devices per day.
And Google protected hundreds of millions of Chrome users on Android from unsafe websites with Safe Browsing.
See Article here
https://security.googleblog.com/2016/04/android-security-2015-annual-report.html
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