2020 SANS Holiday Hack Challenge writeup (English)
I participated the 2020 SANS Holiday Hack Challenge ~ KringleCon 3 ~ which held from around 11th December 2020 to 11th January 2021. The prize term was over, but the challenge site is still working (I guess it's until November 2021?). So I recommend you to register and join this world if you haven'…
