UISGCON14 https://14.uisgcon.org/ 
SECURITY BSIDES KYIV AUTUMN 2018 https://kyiv.securitybsides.org.ua/ 
Interview with Serhii Korolenko about #UISGCON14 #CTF

https://www.hackthis.co.uk 
The Web Application Hacker's Handbook: Finding and Exploiting Security Flaws
https://www.amazon.com/Web-Application-Hackers-Handbook-Exploiting/dp/1118026470 
Passing Security By - Serhii Korolenko https://www.youtube.com/watch?v=rDOYUCy9phA 
Serhii Korolenko - XSS from zer0 to Hero (Workshop) https://www.youtube.com/watch?v=mKqc9u_BRLM 

Securit13 Patreon https://www.patreon.com/securit13 
Keygen Music [2+ hour Mix] https://www.youtube.com/watch?v=cYkaG5CT53I