Cyber defense refers to the strategies and measures taken to protect computer systems, networks, and data from cyber threats such as hacking, malware, and data breaches. It involves the use of technologies, processes, and practices designed to safeguard digital assets and ensure the integrity, confidentiality, and availability of information. Key components of cyber defense include firewalls, antivirus software, and intrusion detection systems. Organizations often implement security policies and conduct regular training for employees to recognize potential threats. By maintaining a strong cyber defense posture, businesses can reduce the risk of cyber attacks and protect sensitive information from unauthorized access.