Cyber security is the practice of protecting computers, networks, systems, and data from digital attacks. In today’s connected world, we use the internet for banking, shopping, communication, and work, which makes our personal and professional information vulnerable to cyber threats. Cyber security helps prevent unauthorized access, data breaches, malware, phishing, and hacking attempts. It involves using technologies, processes, and best practices such as strong passwords, encryption, firewalls, and regular software updates. Effective cyber security is essential for individuals, businesses, and governments to ensure privacy, maintain trust, and protect sensitive information from cyber criminals.