Threat Modeling Through Security Partnerships
IT professionals can identify possible security threats and weaknesses, rank the significance of each, and prioritize mitigation strategies for attacks on IT.
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Key takeaways
- IT professionals can identify possible security threats and weaknesses, rank the significance of each, and prioritize mitigation strategies for attacks on IT resources by using the systematic threat modelling process.
- Prevent internal and external attackers relevant to applications by keeping frameworks up to date.
- It is not a checklist exercise, but it is better to uncover and address a vulnerability before hackers do, and the threat modelling technique is the best approach to do it.
IT professionals can identify possible security threats and weaknesses, rank the significance of each, and prioritize mitigation strategies for attacks on IT resources by using the systematic threat modelling process.
The main characteristic of a threat model is that it is methodical and structured, despite the fact that this broad definition may sound like a cybersecurity specialist’s job description. Threat yodellers follow a set of specific processes to completely understand the environment they are attempting to defend and find vulnerabilities and prospective attackers.
Nevertheless, there is not a single canonical threat modelling procedure, and threat modelling is still, in some aspects, both an art and a science. Threat modelling builds on several prior security techniques, most notably the concept of “attack trees,” which was created in the 1990s. Many people believe that the 1999 publication “The Threats to Our Products” by Microsoft employees Loren Kohnfelder and Prakrit Gang was the first comprehensive account of threat modelling.
However, it is critical to understand that there are several threat modelling frameworks and techniques accessible. Various models highlight different aspects, while others are specialized to certain IT specializations, such as models focused entirely on application security.
Advantages of Threat Modelling #
When done well, threat modelling may offer a clear view of a software project as a whole, aiding in the justification of security measures. An organization’s ability to identify known security risks to an application and make informed decisions about how to counter them is aided by the threat modelling approach. Otherwise, decision-makers could make hasty decisions based on little or no data.
An application’s or computer system’s security posture can be explained and defended using guarantees that a well-documented threat model offers. Additionally, threat modelling is the most efficient technique to do the following when the development organization is serious about security:
- Identify problems early in the software development life cycle (SDLC).
- Find design issues that code reviews and conventional testing methods might miss.
- Consider novel assault strategies that you might not have before.
- Target testing and code review to make the most of testing expenses.
- Determine the security needs.
- Fix issues prior to program release to avoid expensive post-deployment recoding.
- Consider dangers that extend beyond common assaults to applications’ particular security problems.
- Prevent internal and external attackers relevant to applications by keeping frameworks up to date.
- To determine the elements that attackers will try to compromise, highlight assets, threat agents, and controls.
- To pinpoint possible attackers in connection to the system architecture, model the placement of threat agents, motives, skills, and capabilities.
Phases in The Threat Modelling Methodology #
Each threat modelling technique has a unique set of phases; first, let us take a closer look at the fundamental logical structure of all these approaches.
The threat modelling process involves four broad steps:
- Disassemble the infrastructure or application
- To determine the threats
- Decide on mitigation and countermeasures
- Rank threats
We must discuss the specific methods that form the basis of threat modelling to comprehend what goes into each process.
Threat Modelling Techniques #
What does it mean to disassemble an infrastructure or application? According to software developer Andrea Della Core, decomposing an application is often characterized as “knowing the program and how it interacts with other entities. This includes creating use cases to understand how the application is used, identifying entry points to determine how a potential attacker might interact with the application, identifying assets, and determining trust levels, which represent the access rights that the application will grant to external entities.
One way to break down an application is to create a data flow diagram. Early in the 2000s, the concept of a trust boundary—which indicates a point in the data flow where the data must be verified before the entity receiving it may use it—was included. This concept is crucial to utilizing data flow diagrams for threat modelling. These were initially created in the 1970s as a technique to visually depict the movement of data inside a programmed or system as well as the locations where that data is changed or saved by different components.
Threat Modelling Approaches and Frameworks #
The many organized techniques for threat modelling are typically referred to as methodologies or frameworks. There are many of them, but we will focus on the most well-known.
7 top threat modelling methodologies are mentioned below:
- STRIDE
- DREAD
- Trike
- OCTAVE
- NIST
- PASTA
- VAST
Best Methods for Threat Modelling #
Whatever strategy you use, there are a few rules you should follow. The most important but often difficult task is prioritizing threat modelling while creating systems. A secure viewpoint will be built into your application or system if you can accomplish it from the beginning of a project, which will save you a lot of hassle later.
Not seeing apes and systems in isolation from one another is yet another great practice. According to Michael Santarcangelo,“The result is a complete attack surface that the CISO can use to comprehend the whole threat portfolio throughout the organization if the various threat models are connected to one another in the same manner that the apes and components interact as part of the IT system.”
It is important to steer clear of frequent threat modelling blunders. The gist is this: do not get too caught up in the headline-grabbing dangers; remember that some of the largest unintentional risks are your users, and keep in mind that a threat model should be a dynamic thing that requires ongoing revision.
Takeaway #
Regardless of the technology used, the threat modelling process should be redone whenever the application, IT infrastructure, or threat environment changes. As new threats develop, the threat model is kept up to date. Threat analysis takes time and effort. It is not a checklist exercise, but it is better to uncover and address a vulnerability before hackers do, and the threat modelling technique is the best approach to do it.
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