Android 7.0 Getting Strictly Enforced ‘Verified Boot’ for Android Nougat. Google has taken the security of its Android operating system to the next level by strictly enforcing verified boot on devices. Google says non-malicious data corruption could now start affecting process functionality more. Google also features forward error correction that is capable of repairing some errors on devices without any user input. Google: Nougats will prevent your Android device from becoming a playground for malware and viruses.
Source: https://thehackernews.com/2016/07/android-verified-boot.html