Final answer:
The CIA triad refers to principles of information security encompassing Confidentiality, Integrity, and Availability, while the CIA uses intelligence to counter threats. The National Security Act of 1947 established the CIA and NSC, expanding CIA's role in covert operations. In cybersecurity, measures like two-factor authentication and stronger passwords are crucial for data protection.
Step-by-step explanation:
The term CIA triad in information security refers to the principles of Confidentiality, Integrity, and Availability. These principles guide the policies and measures taken to ensure the security of data. In the context of national security, the CIA (Central Intelligence Agency) is involved in a broader scope, including using intelligence services to defeat external threats and using counterintelligence services to protect the nation from internal threats. Furthermore, national security has evolved to include economic, energy, and environmental security, in addition to maintaining a strong military against both nation-states and non-state actors such as terrorist organizations and narcotic cartels.The National Security Act of 1947 was a pivotal moment in United States history, as highlighted by LibreTexts™. This act established the National Security Council (NSC) and the CIA to collect and analyze foreign intelligence. Over time, the CIA's role expanded from merely gathering intelligence to also executing covert operations to support U.S. foreign policy. This often involved overthrowing governments perceived as threats to the containment of Communism, thus shaping the country's foreign policy for decades.In the digital realm, achieving information security includes implementing measures like two-factor authentication, creating stronger passwords, and educating individuals to prevent scams. Companies and governments also need to strengthen their cybersecurity measures to protect sensitive information against various threats.