EVScout2.0: Electric Vehicle Profiling Through Charging Profile

Abstract

EVs (Electric Vehicles) represent a green alternative to traditional fuel-powered vehicles. To enforce their widespread use, both the technical development and the security of users shall be guaranteed. Privacy of users represents one of the possible threats impairing EVs adoption. In particular, recent works showed the feasibility of identifying EVs based on the current exchanged during the charging phase. In fact, while the resource negotiation phase runs over secure communication protocols, the signal exchanged during the actual charging contains features peculiar to each EV. A suitable feature extractor can hence associate such features to each EV, in what is commonly known as profiling.In this paper, we propose EVScout2.0, an extended and improved version of our previously proposed framework to profile EVs based on their charging behavior. By exploiting the current and pilot signals exchanged during the charging phase, our scheme is able to extract features peculiar for each EV, allowing hence for their profiling. We implemented and tested EVScout2.0 over a set of real-world measurements considering over 7500 charging sessions from a total of 137 EVs. In particular, numerical results show the superiority of EVScout2.0 with respect to the previous version. EVScout2.0 can profile EVs, attaining a maximum of 0.88 recall and 0.88 precision. To the best of the authors' knowledge, these results set a new benchmark for upcoming privacy research for large datasets of EVs.

EVExchange: A Relay Attack on Electric Vehicle Charging System

“…It is subjected to fast degradation through usage, which is responsible for reducing the maximum capacity over time [35]. In [8] the authors demonstrate the possibility to profile a vehicle based on the battery charging profile. Some situations can speed up the degradation process, such as extreme operation temperatures, overcharging, and completely draining the battery [45].…”

“…The charging column can be attacked as well, for instance, by a denial of service attack, avoiding some areas to offer charge services to the users. Other exploits which have been proved to be effective in the V2G scenario include the profilation of the battery profile [39] or the profilation of the vehicle [8] based on the electric traces generated from the charging process. Contribution.…”