ZDNet: DarkHotel hackers use VPN zero-day to breach Chinese government agencies.
[1]https://www.zdnet.com/article/darkhotel-hackers-use-vpn-zero-day-to-compromis
e-chinese-government-agencies/

References

   1. https://www.zdnet.com/article/darkhotel-hackers-use-vpn-zero-day-to-compromise-chinese-government-agencies/