Cyber security refers to the practice of protecting computer systems, networks, and data from unauthorized access, use, or disclosure. It encompasses a range of measures, technologies, and processes to safeguard against cyber threats such as hacking, malware, ransomware, and phishing attacks. With the increasing reliance on technology and digitization, the need for robust cyber security measures has become paramount. Cyber security aims to ensure the confidentiality, integrity, and availability of information and systems, preventing unauthorized access, data breaches, and potential disruptions to operations. It involves implementing firewalls, encryption, intrusion detection systems, secure coding practices, and employee training to mitigate risks and keep sensitive information secure. Effective cyber security practices are essential not only for businesses and organizations but also for individuals to protect their personal data and privacy in an increasingly interconnected world.