Mobile security involves protecting both personal and business information stored on and transmitted from smartphones, tablets and other mobile devices. The term mobile security is a broad one that covers everything from protecting mobile devices from malware threats to reducing risks and securing mobile devices and their data in the case of theft, unauthorized access or accidental loss of the mobile device.

Mobile security is closely related to mobile device management (MDM), which is a term that specifically applies to protecting mobile devices in the enterprise or business environments from loss or theft, as well as protecting the data on these devices, but also mobile application security testing (MAST) solutions, to analyse and identify vulnerabilities in the applications that are used on mobile platforms.