FAQin Congress is a free invitation-only underground hacking event in Madrid, Spain being held March 1st through the 3rd, 2018. The call for proposals has been announced.
You can download it from the following link: https://packetstormsecurity.com/files/download/145602/faqin3-cfp.txt
Source: https://packetstormsecurity.com/files/145602/FAQin-Congress-3-Call-For-Proposals.html