환경 변수 보안 파워쉘 관련

[동우]

https://4sysops.com/archives/mitigating-powershell-risks-with-constrained-language-mode/
setx /m __PSLockDownPolicy 4
제한된 사용하기

[동우]

https://github.com/backlion/Offensive-Security-OSCP-Cheatsheets/blob/master/offensive-security/powershell-constrained-language-mode-bypass.md 공격을 차단