How to Break Through Cloud-Based WAF
https://github.com/pyn3rd/WAF-bypass/blob/master/KCon_2019_WAF.pdf
WAF Bypassing with Unicode Compatibility
https://jlajara.gitlab.io/web/2020/02/19/Bypass_WAF_Unicode.html
Web Client Side WAF - Tala Security
https://github.com/pyn3rd/WAF-bypass/blob/master/Tala-Security.pdf