BMW has detected a hacker attack. Instead of closing the operation, however, they allowed them to stay online so that they could track their actions. Only access to confidential information was prevented. A similar story probably happened in Hyundai, unfortunately we do not know the details. The group attacking industry sectors is suspected to be located in Southeast Asian countries.

https://siliconangle.com/2019/12/08/report-bmw-hyundai-targeted-apt32-hacking-group/