Mubix - https://room362.com/
OJ's Perspective - http://buffered.io/
Carnal0wnage - http://carnal0wnage.attackresearch.com/
Corelan - https://www.corelan.be/
Daniel Miessler https://danielmiessler.com/information-security/
NetSec Addict - http://netsec.ws/
SecList - http://seclist.us/