IoT technologies pose serious challenges to digital forensics. The acquisition of digital evidence is hindered by the number and extreme variety of IoT items, often lacking of physical interfaces, connected in unprotected networks, feeding data to uncontrolled cloud services. In this paper we introduce the main issues of «information quality» in this field. After a short introduction, we provide an overview on digital forensics approach to preserve the «chain of custody», then we detect relevant IoT features in order to analyse main concerns in digital forensics. At the end, we propose a formula for benchmarking forensics trustworthiness (Information Quality Assessment).
