What Is Cybersecurity and Why Does It Matter

Short answer

Cybersecurity protects systems, networks, and data from digital attacks. It encompasses prevention, detection, and response to threats.

How it works

Security measures include firewalls, encryption, access controls, and intrusion detection systems. Practitioners follow frameworks like NIST or ISO 27001.

Example

A company encrypts customer passwords with bcrypt, requires multi-factor authentication, and conducts regular penetration testing to find vulnerabilities.

Why it matters

Data breaches cost millions and damage reputation. Strong cybersecurity ensures business continuity, regulatory compliance, and user trust.