defenceindepth

Defence in Depth is a military strategy that involves the use of multiple layers of security measures to protect critical assets. The concept is based on the idea that a single layer of defence is not sufficient to prevent all threats, and that multiple layers can provide redundancy and resilience. The strategy is often used in the context of cybersecurity, where it is known as a multi-layered security approach.

The Defence in Depth strategy typically involves the use of physical, technical, and administrative controls. Physical controls include barriers, guards, and surveillance systems. Technical controls include firewalls, encryption, and intrusion detection systems. Administrative controls include policies, procedures, and training.

The Defence in Depth strategy is designed to make it more difficult for an attacker to penetrate multiple layers of defence. Each layer should be designed to complement the others, and to provide a different level of protection. For example, a firewall may be used to block unauthorized access, while an intrusion detection system may be used to detect and respond to attacks.

The Defence in Depth strategy is often used in the context of critical infrastructure, such as power plants, water treatment facilities, and transportation systems. It is also used in the context of cybersecurity, where it is known as a multi-layered security approach. The strategy is designed to provide a high level of protection against a wide range of threats, and to provide redundancy and resilience in the event of a failure or breach.