Google is calling Lollipop the biggest update to Android ever in terms of security and to back up that claim, they’ve published a blog post outlining some of the new features designed to keep your data safe.
Starting with the obvious, Android lead security engineer Adrian Ludwig points out that using a lock screen is the simplest way to keep data safe and secure on a mobile device. Lost and stolen smartphones are the biggest security issue affecting mobile users but many people don’t use them because it’s bothersome to unlock a device dozens of times a day.
Lollipop includes a feature called Smart Lock that lets users unlock their device through Bluetooth pairing, NFC or via facial recognition. Additionally, you call allow certain notifications to be accessible from the lock screen.
Android Lollipop also enables encryption by default so the data on your device will be protected from the get-go. Full device encryption occurs at first boot using a unique key that never leaves the device. This means that Google never has access to them and couldn’t provide them to law enforcement even if they wanted to.
Google has also strengthened its Security Enhanced Linux (SELinux) implementation which was first introduced last year and has helped prevent multiple vulnerabilities. With Lollipop, SELinux Enforcing mode is required for all applications on all devices.