What are the core pillars of cybersecurity (CIA triad)?
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What are the core pillars of cybersecurity (CIA triad)?
The core pillars of cybersecurity are known as the CIA Triad, which stands for Confidentiality, Integrity, and Availability. These three principles form the foundation of any effective cybersecurity strategy.
1. Confidentiality
Definition:
Ensuring that information is accessible only to authorized users and protected from unauthorized access or disclosure.
Example:
Using encryption, access controls, and authentication mechanisms to prevent sensitive data (like personal or financial information) from being exposed.
2. Integrity
Definition:
Maintaining the accuracy and trustworthiness of data throughout its lifecycle. It ensures that information is not altered, tampered with, or deleted by unauthorized parties.
Example:
Using hashing, digital signatures, and checksums to detect and prevent unauthorized data modification.
3. Availability
Definition:
Ensuring that information and systems are accessible and usable when needed by authorized users.
Example:
Implementing redundancy, regular backups, and DDoS protection to keep services running during cyberattacks or system failures.
The CIA Triad—Confidentiality, Integrity, and Availability—is the foundational model of cybersecurity, guiding how data and systems should be protected. Confidentiality ensures that sensitive information is accessible only to authorized individuals, often through encryption and access controls. Integrity guarantees that data remains accurate and unaltered, using methods like hashing and digital signatures to detect tampering. Availability ensures that systems and data are accessible when needed, maintained through backups, redundancies, and security measures against disruptions like DDoS attacks. Together, these three principles form the core of designing secure and resilient information systems.
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