Google Nexus Android Mobile Devices Get Tighter Security

Google will now start to issue monthly security updates for many Nexus Android devices to help keep users more secure against hackers.

Nexus, Google, Android, smartphones, tablets, security vulnerabilities, Stagefright. security rewards

Security in Google's Android mobile operating system is getting more formal, with the introduction of new monthly security updates that will be issued over-the-air (OTA) to a wide range of Nexus mobile devices.

The latest security step was detailed by Adrian Ludwig, lead engineer for Android security, and Venkat Rapaka, director of Nexus product management, in an Aug. 5 post on The Official Android Blog.

"For the past three years, we have been notifying Android manufacturers every month through bulletins of security issues so that they can keep their users secure," wrote Ludwig and Rapaka. "Nexus devices have always been among the first Android devices to receive platform and security updates. From this week on, Nexus devices will receive regular OTA updates each month focused on security, in addition to the usual platform updates."

The first such security update began rolling out on Aug. 5, they wrote, to devices, including the Nexus 4, Nexus 5, Nexus 6, Nexus 7, Nexus 9, Nexus 10 and Nexus Player. The first security update includes fixes for issues reported since July 2015, including fixes for the libStageFright vulnerabilities, they wrote. "At the same time, the fixes will be released to the public via the Android Open Source Project. Nexus devices will continue to receive major updates for at least two years and security patches for the longer of three years from initial availability or 18 months from last sale of the device via the Google Store."

The additional step is the latest in Android's arsenal to protect customers and their devices, wrote Ludwig and Rapaka. "Security continues to be a top priority and monthly device updates are yet another tool to make and keep Android users safe."
The StageFright vulnerability was raised publicly in July when it was reported by security firm Zimperium, according to an earlier eWEEK article. The flaw is estimated to expose as many as 950 million users to risk. The vulnerability is found in the Android Stagefright media library, which is a common element in Android versions 2.2 and higher. The flaws in large part are integer overflows that lead to potentially exploitable memory buffer overflow conditions, according to the report.

In June, Google announced that it will pay thousands of dollars to researchers who find and report vulnerabilities in the Android mobile operating system as part of a new bug bounty program the company unveiled. The Android Security Rewards program builds on the format used in the company's well-known bug-hunting initiative for its Chrome Web browser. Software security researchers who find verifiable issues and disclose them by following the company's guidelines can earn up to $38,000 per issue. The program is part of the company's efforts to harden the Android platform.

Rewarding researchers for vulnerabilities is not a new idea. In 1995, Netscape kicked off an initiative to pay programmers for finding bugs in its pioneering Web browser software. In 2002, Verisign iDefense created the first third-party program, offering to pay researchers for information on bugs in popular enterprise software. Now, companies, such as HackerOne and Bugcrowd, offer third-party services to create and manage vulnerability-reward programs.

The Android Security Rewards program will be Google's third bug bounty initiative. The company has two other reward programs and paid out more than $1.5 million last year to researchers. Currently, Google pays for security vulnerabilities found in the Chrome Web browser under its Chrome Reward Program and the occasional Chromium competition. The Google Vulnerability Reward Program (VRP), its second bounty program, pays prize money to researchers who find flaws in the company's Websites, including, and Blogger.

With its latest bug bounty, the company will increase its payout to flaw finders for more detailed vulnerability submissions. The prizes start at $500 for a moderate issue, $1,000 for a highly severe issue and $2,000 for a vulnerability considered critical.