What does the onion analogy in cybersecurity primarily illustrate?

What does the onion analogy in cybersecurity primarily illustrate?

• A. Defense in Depth
• B. Centralized Control
• C. Single-Layer Defense
• D. Rapid Exploitation

Answer: (A)

Layered security, or defense in depth, means protecting systems with several overlapping barriers rather than relying on one shield. The onion analogy shows how each peel adds protection and detection, so an attacker must get through multiple layers—like perimeter defenses, access controls, strong authentication, encryption, monitoring, and incident response. If one layer is breached, the others still stand to slow the attacker, buy time, and trigger alerts, increasing the chances of stopping the intrusion before sensitive assets are compromised. This approach reduces dependence on any single control and helps cover weaknesses you might not know about. It’s not about a single barrier or centralized control; it’s about multiple layers working together to make breaches harder and detection more likely.

Layered security, or defense in depth, means protecting systems with several overlapping barriers rather than relying on one shield. The onion analogy shows how each peel adds protection and detection, so an attacker must get through multiple layers—like perimeter defenses, access controls, strong authentication, encryption, monitoring, and incident response. If one layer is breached, the others still stand to slow the attacker, buy time, and trigger alerts, increasing the chances of stopping the intrusion before sensitive assets are compromised. This approach reduces dependence on any single control and helps cover weaknesses you might not know about. It’s not about a single barrier or centralized control; it’s about multiple layers working together to make breaches harder and detection more likely.