Car Hacking and Defense Competition on In-Vehicle Network

The purpose of this paper is to share our experience of holding a car security competition. We hosted the Car Hacking: Attack & Defense Challenge from September 14, 2020 to November 27, 2020, in South Korea. The competition problem was to develop attacks and detection algorithms for CAN, a widely used standard of in-vehicle communication. The participants earned scores when they detect other team's attacks and inject critical or stealth attacks. The most significant difference from the events of Pwn2Own and SINCON is that we held attack and detection competitions simultaneously.