Introduction to Cyber Security In today's interconnected world, cyber security is the cornerstone of digital protection. It involves defending computers, servers, mobile devices, electronic systems, networks, and data from malicious attacks. Understanding cyber security is crucial because it impacts everything from personal data protection to the security of national infrastructure. With the rise in cyber threats, awareness and proactive measures have become paramount to prevent data breaches and other security incidents. Network Security Network Security is the practice of securing a computer network from intruders, whether targeted attackers or opportunistic malware. It involves measures and technologies that protect network infrastructure and data. Effective network security manages access to the network and includes a variety of defenses at the edge and in the network. Tools such as firewalls, anti-virus software, intrusion detection systems (IDS), and intrusion prevention s...