What is Defense in Depth and why do we need that?

by | Aug 17, 2020 | CCNA, CCNP, CompTIA, Data Breaches and Prevention, Data Security, Exclusive Articles, Featured, Information Security, Malware Prevention, Network Security

Defense in Depth

What is Defense in Depth?

In the medieval era, there used to be multiple layers of security in a castle. The multiple layers of security used to make sure it takes months for an attacker to penetrate the layers of security. A similar concept is used in cybersecurity. And, we call it Defense in Depth or Castle Approach.

Defense in Depth (DiD) or Castle Approach is an approach in which multiple cybersecurity mechanisms are applied in layers to protect valuable data and information. A single security approach is not always enough. If there is a single layer of defense and an attacker manages to circumvent that, thwarting the cyberattack will be difficult. The intention of defense in depth is, even if an attacker manages to circumvent one layer of defense, the other layers will be able to thwart the cyberattack.


In this article, we would discuss:

  • What is Defense in Depth?

  • Why do we need Defense in Depth?

  • How to implement Defense in Depth?

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Amrita Mitra

Author

Ms. Amrita Mitra is an author, who has authored the books “Cryptography And Public Key Infrastructure“, “Web Application Vulnerabilities And Prevention“, “A Guide To Cyber Security” and “Phishing: Detection, Analysis And Prevention“. She is also the founder of Asigosec Technologies, the company that owns The Security Buddy.

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