Case study: From embedded system analysis to embedded system based investigator tools

Since mid-2012, France and Germany have had to deal with a new form of payment card skimming. This fraud consists of adding a wireless embedded system into a point-of-sale payment terminal with the fraudulent goal of collecting payment card data and personal identification numbers (PIN).This case study details the strategy adopted to conduct the digital forensic examination of these skimmers. Advanced technologies and analyses were necessary to reveal the skimmed data and provide useful information to investigators for their cross-case analysis.To go further than a typical digital forensic examination, developments based on embedded systems were made to help investigators find compromised payment terminals and identify criminals.Finally, this case study provides possible reactive and proactive new roles for forensic experts in combating payment card fraud.