This report provides an overview of cyber security and IT infrastructure. It defines cyber security as a process that protects digital data and devices. The report emphasizes the growing importance of cyber security due to the increasing use of information technology. It analyzes the challenges faced, particularly privacy concerns arising from unauthentic servers. The report explores the key elements of cyber security, including information, network, data, and application security. The report also examines IT infrastructure, including hardware, software, and networks, and how cyber security protects these systems. It identifies common cyber threats like ransomware, malware, and phishing. The conclusion highlights the importance of authorized networks, security tools like firewalls and encryption, and the ongoing need to address cyber-crimes and data breaches.