This talk will cover basic techniques involved in reverse engineering Android .apk files alongside common obfuscation techniques used by developers. I will showcase my findings from investigating ‘Stalkerware’, a branch of mobile malware that allows users to spy on spouses, children and co-workers. Stalkerwear allows paranoid users to spy on those closest to them and this talk will cover three main area regarding ‘Stalkerwear’; the legality of such software, the technical capability of the software and how it operates and finally how we can prevent the spreading of these malicious applications.