OS Hardening

https://drive.google.com/file/d/1yokygBlp2MQI99VSGcln-MlKQEACD4_z/view?usp=sharing

Process Part1

https://drive.google.com/file/d/1Qek8ukrNaOZx-0-_X_Q8ClugMynEbMbB/view?usp=sharing

Process Part2

https://drive.google.com/file/d/1aUdfjEHGqyWvgpgIpilwg0v-5lgib-hr/view?usp=sharing