Google's monthly Android security updates are nothing new, but its latest release may be particularly important. The new April update tackles eight critical vulnerabilites that include one in the libstagefright library -- you know, the same media framework that recently faced a rash of real and potential exploits. It also patches a nasty kernel flaw that would give attackers full control over your device. You'll get first crack at the fixes if you either have a Nexus device or can install an Android Open Source Project build, but other vendors that offer Google's monthly updates will likely follow suit before long.