Threat Modeling Design For Security Benefits

Security risk management is a major concern across the several organizations worldwide. Most of these companies implement some kind of security program, which includes activities like vulnerability remediation & penetration testing that typically happens in the final stage of the development cycle. However, it is important to design security into the software to resolve the security issues early. This is because the security issues are relatively simple as well as cost-effective to address at this time. This is where the importance of threat modeling design for security comes in. 

Threat modeling is a security control completed during the architecture as well as the design phase of the software development life cycle to determine and reduce the risk present in the software. It identifies the weaknesses and possible threats early in the software design phase, mitigates the danger of attacks and reduces the high cost of solving vulnerabilities determined in the production stage. NIST (National Institute of Standards and Technology) estimates that the error fixes achieved after the software is released can affect in 30 times the price of fixes achieved during the design stage. 

In addition, fixing error later on the SDLC also significantly influence the user productivity. On the other hand, it is possible to achieve data protection much easier at the design stage. Therefore, when considering security, a most common methodology is to build a certain threat model design that tries to define the kinds of attacks, which are possible to happen. This approach is helpful when building file system/file system filter driver since it forces the developer to focus on the possible attack vectors against a file driver. Possessing determined potential threats, a file driver developer finds simple to consider the ways of defending against threats to strengthen the entire security of the system. 

As we already discussed the Threat Modeling Process For Secure Design Implementation in our earlier blog, here we are going to focus on the benefit of the threat modeling design.

Why Do We Require To Perform The Threat Modeling Design?

The organization experiences several benefits from the threat modeling. A good threat model describes and constrains the objectives; hence, it could be possible to declare proper care in terms of protecting digital assets. The threat modeling also supports to define the essential security features & control need by the system. Added to this, it drives as well as focus essential security processes, including security testing and code analysis. 

It supports to prioritize the kinds of attacks in order to address as well as support to choose controls for mitigating risks.  Drive reliable standards to apply a security policy to the enterprise. Prioritize risk handling by beating into the real-time threat intelligence. A threat model offers a baseline for identifying where the risk exposure exists to minimize them. It enlarges the other calculations by appending further attack vectors and determining new kinds of vulnerabilities. 

In addition to the special association, the threat modeling possesses with the secure architecture, as it also supports an input to the actions, which happen in other phases of the software development lifecycle including requirement identification, code reviewing, test planning and penetration testing. It informs these actions and provides an invaluable vision into the approaches that attackers could choose to affect the system.

Benefits Of Performing Threat Modeling At The Architectural Level

Threat modeling design supports to 

  • Confirm suitability of the determined security structures to be implemented
  • Identify gaps in the security structures to be implemented
  • Identify any further security aspects
  • Identify policy & process requirements
  • Identify requirements that to be inserted into security operations
  • Identify logging & monitoring requirements
  • Understand business continuity requirements
  • Understand capacity & availability requirements

Benefits Of Performing Threat Modeling At The Design Level

Threat modeling design supports to 

  • Identify vulnerabilities, which require being fixed at the design level and fed this into the development phase
  • Identify information assets, which require security controls
  • Map the determined security controls into Administrative / Technical / Physical controls (this action can be performed at the architectural level too, but performing it at the design stage supports in being granular). 
  • Identify security test cases or security test scenarios in order to test the security needs.

As the digital world increases in reliance on the system for sensitive information, the possibilities of software being hacked are also raised. Security requires to be a portion of the design process of software. Applying security at the design stage with the help of threat modeling process guarantees that software security is being built, thus reducing the chance of an attack. 


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