level of waf
- https://github.com/thepwnexperts/m4-sm1-b1 [input validation/filtration at input box level]
- https://github.com/thepwnexperts/m4-sm2-b1 [input validation/filtration at application level]
- https://github.com/thepwnexperts/m4-sm3-b1 [input validation/filtration at server level]
- https://github.com/thepwnexperts/m4-sm4-b1 [input validation/filtration at dns level via domain registrar]