Information Systems Security is a moving target. As AI and quantum computing evolve, the tools will change, but the fundamentals—protecting the Confidentiality, Integrity, and Availability of our digital lives—remain the same. In the digital age, security is not a destination; it is a continuous state of vigilance.
Solid security never relies on a single "front door." Instead, it uses —a layered approach borrowed from medieval castle design: Physical Security: Locks, cameras, and biometric scanners. Fundamentals of information systems security
Secure coding practices and regular patching. Information Systems Security is a moving target
Ensuring that systems and data are ready for use when needed. A secure system is useless if it’s crashed by a Denial-of-Service (DoS) attack. 2. The Human Element: Policy and People Solid security never relies on a single "front door
Encryption—the final line of defense that renders data unreadable even if it is stolen. 4. The Logic of Access Control
Identifying what assets you have, what threats they face, and how much you’re willing to spend to protect them.
At the heart of every security policy lies the . These three concepts are the benchmark for any secure system: