October 2014
Intermediate to advanced
432 pages
13h 48m
English
Content preview from Android Security InternalsBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 12. Selinux
While previous chapters mentioned Security-Enhanced Linux (SELinux) and its Android integration, our discussion of Android’s security model up until now has focused on Android’s “traditional” sandbox implementation, which relies heavily on Linux’s default discretionary access control (DAC). The Linux DAC is lightweight and well understood, but it has certain disadvantages, most notably the coarse granularity of DAC permissions, the potential for misconfigured programs to leak data, and the inability to apply fine-grained privilege constraints to processes that run as the root user. (While POSIX capabilities, which are implemented as an extension to the traditional DAC in Linux, offer a way to grant only certain privileges to ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.