Security is one of the main concerns for Android users today. Users will access the Internet intensively and everyone can develop applications for Android. Android is currently the most popular smart phone operating system. Antivirus software promises to effectively protect against malware on mobile devices and many products are available for free or at reasonable prices. Their effectiveness is supported by various reports, attesting very high detection rates. However, a more detailed investigation is required in order to understand the real risk level arising from malware for the Android platform. Neither do the exceedingly high numbers of different malware variants reflect the real threat in comparison to other.