Educational article

Core Principles of Information Security

Information security is commonly summarized by the CIA triad: confidentiality, integrity, and availability. Defensive programs also emphasize risk management, secure configuration, and incident response readiness.

Confidentiality

Ensure information is accessible only to authorized users. Controls include encryption, access controls, and strong authentication.

Integrity

Prevent unauthorized modification of data and systems. Techniques include hashing, signed updates, change control, and monitoring.

Availability

Ensure services remain accessible when required. Resilience includes redundancy, backups, monitoring, and recovery testing.

Defensive security checklist

Asset inventory and secure baselines
Vulnerability management and prioritized patching
Centralized logs, monitoring, and detection engineering
Incident response plans and tabletop exercises
Least privilege and strong identity controls (MFA/IAM)