Defense in Depth (DiD) is a cybersecurity strategy that employs multiple layers of security controls and measures to protect information and systems. This approach ensures that if one layer is breached, additional layers continue to provide protection, thereby reducing the risk of a successful attack. DiD encompasses various security measures, including physical security, network security, endpoint protection, and user awareness training, creating a comprehensive defense strategy. The goal is to create a more resilient security posture that can better withstand and respond to threats.
An important principle of the Defense in Depth strategy is that achieving Information assurance requires a balanced focus on three primary elements: People, Technology and defense of the environment
DiD - Defense in Depth
AR 25-2Information Assurance (See AR 25-2 paragraph 1-1)Purpose:Defines and mandates the Defense in Depth strategy.
AR 25-2Information Assurance (See AR 25-2 paragraph 1-1)Purpose:Defines and mandates the Defense in Depth strategy.
Network. pg 374
Security dollars are invested in a single solution
People, operations and defense of the environment.
all of the above
Defense in Depth is a cybersecurity strategy that involves implementing multiple layers of security controls to protect information and systems. This approach ensures that if one layer is breached, additional layers remain in place to prevent or mitigate the impact of an attack. Practicing Defense in Depth includes using firewalls, intrusion detection systems, encryption, access controls, and employee training, among other measures, to create a comprehensive security posture. The goal is to create redundancy and resilience against various types of threats.
A reason that would not support implementing Defense in Depth is the belief that a single security measure is sufficient to protect against all threats. This mindset underestimates the complexity and variety of potential attacks, making organizations vulnerable. Effective security requires multiple layers of defense to address different attack vectors, rather than relying solely on one solution.
Implementing defense in depth enhances security by creating multiple layers of protection, making it harder for attackers to penetrate systems and access sensitive data. This approach mitigates risks by combining various security measures, such as firewalls, intrusion detection systems, and encryption, to address different threat vectors. Additionally, it improves incident response capabilities, as multiple layers can help detect and contain breaches more effectively. Ultimately, defense in depth fosters a more resilient security posture, reducing the likelihood of successful attacks.
forensic readiness