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Nowadays, malware is affecting not only PCs but also mobile devices, which became pervasive in everyday life. Mobile devices can access and store personal information (e.g., location, photos, and messages) and thus are appealing to malware authors. One of the most promising approach to analyze malware is by monitoring its execution in a sandbox (i.e., via dynamic analysis). In particular, most malware sandboxing solutions for Android rely on an emulator, rather than a real device. This motivates malware authors to include runtime checks in order to detect whether the malware is running in a virtualized environment. In that case, the malicious app does not trigger the malicious payload. The presence of differences between real devices and Android emulators started an arms race between security researchers and malware authors, where the former want to hide these differences and the latter try to seek them out.

This paper deals with the production of nanofibrous piezoelectric sensors for flexible applications. The nanofibers produced via electrospinning are integrated a soft hosting material (epoxy resin and polyurethane rubber) and the electrodes are manufactured by using conductive carbon powder. The process described in this work leads to the realization of a piezoelectric sensor suitable for flexible applications without any delamination risks or mechanical failures that could occur by using traditional piezoelectric films and metallic electrodes. The piezoelectric response results to be comparable with traditional piezoelectric devices.