1.) ESET Multi-Device Security is a bundle of ESET products that you can activate using a single license. A Multi-Device Security license allows you to install any combination of the following ESET products: - ESET NOD32 Antivirus for Windows - ESET Internet Security for Windows - ESET Cyber Security or ESET Cyber Security Pro for Mac OS X - ESET NOD32 Antivirus for Linux* - ESET Mobile Security (for Android) - ESET Parental Control for Android**