An operating system (OS) is a software system that manages computer hardware and software resources and provides common services for computer programs. Examples of operating systems include Windows, macOS, and Linux. Get more info Cybersecurity refers to the practice of protecting computer systems and networks from unauthorized access, theft, damage, or disruption. Cybersecurity is important for protecting sensitive data, such as personal information, financial records, and intellectual property. Cybersecurity measures include firewalls, encryption, and intrusion detection systems.