English
资源说明：In a relatively short period of time, Android has
become the world’s most popular mobile platform.
Although originally designed for smartphones, it
now powers tablets, TVs, and wearable devices, and
will soon even be found in cars. Android is being
developed at a breathtaking pace, with an average of two major releases
per year. Each new release brings a better UI, performance improvements,
and a host of new user-facing features which are typically blogged about
and dissected in excruciating detail by Android enthusiasts.
One aspect of the Android platform that has seen major improvements
over the last few years, but which has received little public attention, is security.
Over the years, Android has become more resistant to common exploit
techniques (such as buffer overflows), its application isolation (sandboxing)
has been reinforced, and its attack surface has been considerably reduced
by aggressively decreasing the number of system processes that run as root.
In addition to these exploit mitigations, recent versions of Android have
introduced major new security features such as restricted user support,
www.it-ebooks.info
xxii Introduction
full-disk encryption, hardware-backed credential storage, and support for
centralized device management and provisioning. Even more enterpriseoriented
features and security improvements such as managed profile
support, improved full-disk encryption, and support for biometric authentication
have been announced for the next Android release (referred to as
Android L as I write this).
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