The Nullcon Berlin 2022 Call For Papers is open. It will take place April 8th through the 9th, 2022 in Berlin, Germany.
You can download it from the following link: https://packetstormsecurity.com/files/download/165188/nullconBerlin2022-cfp.txt
Source: https://packetstormsecurity.com/files/165188/Nullcon-Berlin-2022-Call-For-Papers.html