According to the Nexus Security Bulletin - February 2016: We have released a security update to Nexus devices through an over-the-air (OTA) update as part of our Android Security Bulletin Monthly Release process. This goes on to say: The most severe of these issues is a Critical security vulnerability that could enable remote code execution on an affected device through multiple methods such as email, web browsing, and MMS when processing media files. The Remote Code Execution Vulnerability in Broadcom’s Wi-Fi driver is also Critical severity as it could allow remote code execution on an affected device while connected to the same network as the attacker. We have had no reports of active customer exploitation of these newly reported issues. More details are available at: http://source.android.com/security/bulletin/2016-02-01.html To install this update on your Nexus, go to Settings > About tablet > System updates.