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Electric Vehicle DC charging tripped by a wireless hack

March 30, 2022

Researchers from the University of Oxford published details of a vulnerability in the Combined Charging System that has the potential to abort charging.

The Combined Charging System (CCS) is one of the plethora of standards in the EV charging world, and allows DC fast charging.

Different plug types are used for the US and EU regions (dubbed Combo 1 and 2 respectively) but both use the same underlying technology. As well as taking in all that lovely charge, the EV and the Electric Vehicle Supply Equipment (EVSE) swap messages concerning how charged things are, the maximum possible current and so on. The link used for the communication is provided by the HomePlug Green PHY (HPGP) power-line communication (PLC) technology.

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