Book excerpt: Mobile device security is something that affects nearly every person in the world. Users are still however, crying out for good information on what they should do to prevent theft, protect their smartphone from attack and for advice that they can use practically to help themselves. This short book sets out to address that. Originally written as a whitepaper for the Police in the UK, it gives some of the history of mobile security and explains the efforts that have gone on behind the scenes in the mobile industry to help secure users. It also provides guidance for users to help protect themselves. The technology in mobile phones is constantly evolving and new threats and attacks emerge on a daily basis. Educating users is one of the most important and valuable things that can be done to help prevent harm. The author brings his extensive experience of the mobile industry and security development for devices to this book in order to help make users safer and more secure.