Cyber security protects computer networks against:

Cyber security is a broad field dedicated to protecting computer systems and networks from digital attacks. Its foundational goal is to ensure the confidentiality, integrity, and availability of information. This involves safeguarding against a multitude of threats that can compromise these aspects.

• A. Unauthorized Access (True): Cybersecurity prevents individuals or entities without proper permissions from gaining entry to systems or data.
• B. Exploitation (True): It protects against the misuse of system vulnerabilities to gain control or cause harm.
• C. Modification (True): Cybersecurity ensures that data and system configurations are not altered without authorization, maintaining data integrity.
• D. All of these (Correct): Cybersecurity encompasses protection against unauthorized access, exploitation of vulnerabilities, and unauthorized modification of data or systems. Therefore, all the listed options are critical areas of protection provided by cybersecurity.