Lesson 1: What Cyber Security Is and Why It Matters

Imagine a hospital suddenly losing access to its digital appointment system: patients may be delayed even if no computer has been physically damaged. What has failed is not simply a battle between a user and a hacker, but the protection of technology, information and services on which people depend. This is the central idea of cyber security: reducing the risk and impact of cyber attacks so digital life can continue safely and reliably.