Links about write-ups and articles.

https://evilcodecave.wordpress.com/

https://www.malwaretech.com/

https://j00ru.vexillium.org/

http://phrack.org/issues/69/1.html

https://googleprojectzero.blogspot.com/

https://github.com/j00ru/ctf-tasks

https://0x00sec.org/c/exploit-development/53

https://tuonilabs.wordpress.com/

https://defuse.ca/security-contact-vulnerability-disclosure.htm#

http://neilscomputerblog.blogspot.com/

https://www.geoffchappell.com/index.htm?tx=9 (Windows stuff)

https://yurichev.com/news/

https://exploit.education/

https://ahmed-belkahla.me/

https://osandamalith.com/

https://blog.talosintelligence.com/

https://rootkits.xyz/blog/

https://www.opensecuritytraining.info/Training.html

https://securityresear.ch/

https://timcore.ru/ (RU)

https://inc0gnito.medium.com/

https://forum.tuts4you.com/index.php

https://www.emu-land.net/forum/

https://forum.reverse4you.org/ (R0 Crew)

http://forum.codecall.net/

http://chief-net.ru/forum/

https://missing.csail.mit.edu/

https://ctflearn.com/challenge/1/browse (CTF)

https://github.com/UMD-CSEC/UMDCTF-2021-Public-Challenges/tree/master/Pwnables (CFT-like)

http://lackingrhoticity.blogspot.com/?m=1

https://dolosgroup.io/blog

https://blog.cr.yp.to/20140323-ecdsa.html