This free and highly rated app provides you with anti-virus protection and security to block viruses, malware and spyware. It also has a firewall and intrusion prevention. This app will also scan the other apps you download and automatically update the virus definitions with the latest threats.
If your Android is lost or stolen you can log in to your account from any computer, activate an alarm or turn on GPS to track down your phone on a map.
It also has a backup and restore feature, which you can also activate online, that will restore all your contacts, emails, texts, photos and videos.
(Download Lookout here)