Security in the digital realm encompasses all measures taken to protect data, networks, and computer systems from unauthorized access, use, disclosure, disruption, modification, or destruction. It’s a broad field aimed at ensuring confidentiality, integrity, and availability (the “CIA Triad”).

Topics often covered are:

• Vulnerability Assessment: Identifying weaknesses in systems.
• Penetration Testing: Simulating attacks to find exploitable flaws.
• Secure Coding Practices: Writing code that is resilient to common attacks like SQL Injection and XSS.
• Network Security: Protecting the underlying infrastructure with firewalls, VPNs, and monitoring.