A computer is an essential tool for most people nowadays, and therefore, need to have a better cyber defence. Cybersecurity is an area that is continuously active and expanding. Hackers are always seeking to discover different ways to infiltrate systems and connections. We successfully cracked WEP, WPA, and WPA2 encryption by using the script in Kali Linux operating system, while also performing Reverse Shell attacks to windows and linux. This lab gave active support and introduction for our future work. We plan to apply the skills we learned this semester to actual computer and network penetration testing. Even exploring broader devices like car, IoT and phone hacking.