Google Commits To Monthly Security Updates For Nexus Devices
 

Security updates on mobile operating systems have typically been bundled inside larger patches that include other bug fixes and improvements. Unfortunately, the world of security exploits isn't tuned to a company's release schedule, which can leave devices and platforms vulnerable to exploits for long periods of time. Microsoft recognized this issue long ago and has since used Windows Update to roll out regular security patches when needed. With the growth of mobile, more attention is now being placed on the security of smartphones and tablets.

http://www.anandtech.com/show/9496/g...-nexus-devices