Final answer:
Measures and controls, such as access controls, encryption, firewalls, and security awareness training, are implemented to deny unauthorized persons information from information systems related to national security and ensure authenticity.
Step-by-step explanation:
Measures and controls taken to deny unauthorized persons access to information derived from information systems related to national security and ensure the authenticity of such information systems include:
- Access controls: Implementing strong access controls, such as passwords, multi-factor authentication, and user permissions, to restrict unauthorized access to sensitive information.
- Encryption: Using encryption techniques to protect data, both at rest and in transit, so that even if the information is accessed, it cannot be understood without decryption.
- Firewalls and Intrusion Detection Systems (IDS): Deploying firewalls and IDS to monitor and block unauthorized network traffic and protect against cyber attacks.
- Security Awareness Training: Educating employees about security best practices, such as identifying phishing emails, protecting sensitive information, and reporting suspicious activities.
These measures and controls help safeguard national security information and ensure that only authorized individuals have access to it.