Almost all software systems today face a variety of threats, and the. In this blog post, i summarize 12 available threatmodeling methods. Attackercentric threat modeling starts with an attacker, and evaluates their goals, and how they might achieve them. However for other people im with, who have never done it at all, id like to check out some examples somewhere but i cant find any online. Approaches to threat modeling threatmodeler software, inc.
However, you may discover that certain threats, usually ones with a very slim chance of occurring, might not require any immediate action. With help from a deck of cards see an example in figure 6, analysts can. This approach is used in threat modeling in microsofts security. Software centric software centric threat modeling also called system centric, design centric, or architecture centric starts from the design of the system, and attempts to step through a model of the system, looking for types of attacks against each element of the model. Countermeasures are included in the form of actionable tasks for developers. Threat modeling is a somewhat generic term referring to the process of analyzing a software system for vulnerabilities, by examining the potential targets and sources of attack in the system. The threat rating process should be influenced by the chance of the threat causing great damage to your software and other potential attacks that could occur. Sep 09, 20 real world application threat modelling by example 1. Historically, threat modeling was achieved by using outdated tools and redundant processes. Larry osterman, douglas maciver, eric douglas, michael howard, and bob fruth gave me hours of their time and experience in understanding threat acknowledgments.
When cyber threat modeling is applied to systems being developed it can reduce fielded vulnerabilities and costly late rework. Assetcentric threat modeling often involves some level of. Conceptually, a threat modeling practice flows from a methodology. Sample scenarios for threat model analysis biztalk. Chapter 3 focuses on existing threat modeling approaches, and chapter 4 discusses integrating threat modeling within the different types of software development lifecycles sdlcs. Numerous threat modeling methodologies are available for implementation. Threat modeling is also used to refer, variously, to analysis of software, orga nizational. Process for attack simulation and threat analysis ucedavelez, tony, morana, marco m. In addition to being a requirement for dod acquisition, cyber threat modeling is of great interest to other federal programs, including the department of homeland security and nasa. Cyber threat modeling can motivate the selection of threat events or threat scenarios used to evaluate and compare the capabilities of technologies, products, services. Risk centric has the objective of mitigating what matters evidence based threat modeling harvest threat intel to support threat motives leverage threat data to support prior threat patterns risk based approach focuses a lot on probability of attacks, threat likelihood, inherent risk, impact of compromise. In this course, threat modeling with the microsoft threat modeling tool, youll learn how to use the microsoft threat modeling tool to perform application threat modeling. Request pdf software and attack centric integrated threat modeling for quantitative. It contains seven stages, each with multiple activities, which are illustrated in figure 1 below.
This paper presents a quantitative, integrated threat modeling approach that merges software and attack centric threat modeling techniques. Experiences threat modeling at microsoft ceur workshop. It may be an interesting activity to finetune this list of objectives by considering the application needs. You look at the architecture, commencing with the design of the system and walk through evaluating threats against each component. Attack surface threat surface analysis threatmodeler. Definition of the application security and compliance requirements. No one threat modeling method is recommended over another. Familiarize yourself with software threat modeling. The approach to threat modeling can be asset centric, flow centric or attacker centric, depending on the point of view used during the threat modeling. To build such a model, we can evaluate different threat modeling methodologies to identify structural vulnerabilities and prevent attacks.
Threat modeling finding defects early in the cycle. Real world application threat modelling by example 1. Rami bahsoon, in agile software architecture, 2014. Threat modeling is a type of risk analysis used to identify security defects in the design phase of an information system. Threat modeling tool is a free windows based tool that can be used within a threat modeling activity. Instead of tampering with the poi and risk getting caught, replace the target poi with one of your own. Application threat modeling on the main website for the owasp foundation. Chapter 6 and chapter 7 examine process for attack simulation and threat analysis pasta. A good example of a software centric approach is microsofts secure development lifecycle sdl framework. Newest threatmodeling questions information security. I have threat modelled applications in the past, but id like to threat model a distributed system. Sample scenarios for threat model analysis biztalk server. Approaches to threat modeling attackercentric softwarecentric stride is a softwarecentric approach assetcentric 8. Sep 19, 20 softwarecentric softwarecentric threat modeling also called systemcentric, designcentric, or architecturecentric starts from the design of the system, and attempts to step through a model of the system, looking for types of attacks against each element of the model.
Asset centric approach is focused primarily on assets and threats to their security attributes confidentiality. First, youll discover that the softwarecentric threat modeling approach is greatly enhanced by taking advantage of the microsoft threat modeling tool. Microsoft approach this is softwarecentric threat modelling. The purpose of threat modeling is to provide defenders with a systematic. Help with risk analysis defensive help with efficient effort investment offensive threat modelling 101 attacker centric aka attack trees software, system, design or architecture centric asset centric aka traditional risk. Approaches to threat modeling are you getting what you need. What are the risks of posting family pictures online, for example on a blog site, without any access control in place. Typically, threat modeling has been implemented using one of four approaches independently, asset centric, attacker centric, and software centric. Threat modeling a process by which potential threats can be identified, enumerated, and prioritized all from a hypothetical attackers point of view. The purpose of this section is to show you the steps of a tma. Threat modeling is considered to be a key activity, but can be challenging to perform for developers, and even more so in agile software development. The three main approaches for threat modelling are asset centric, attacker centric or software centric. Attackers motivations are often considered, for example, the nsa wants to read this email, or jon wants to copy this dvd and share it with his friends. Add threat modelling to your web application security best.
Apr 15, 2016 asset centric approaches to threat modeling utilize attack trees, attack graphs, or through visually illustrating patterns by which an asset can be attacked. Provides a unique howto for security and software developers who need to design secure products and systems and test their designs explains how to threat model and explores various threat modeling approaches, such as assetcentric, attackercentric and softwarecentric provides effective approaches and techniques that have been proven at. Attacks can disable systems entirely or lead to the leaking of sensitive information, which would diminish consumer trust in the system provider. The full list must be developed during the later part of threat modeling execution. Data centric system threat modeling is threat modeling that is 160. The cuckoo example assuming you are an existing merchant. Softwarecentric softwarecentric threat modeling also called systemcentric, designcentric, or architecturecentric starts from the design of the system, and attempts to step through a model of the system, looking for types of attacks against each element of the model. Without that tool, my experience and breadth in threat modeling would be far poorer. Threat modeling is often seen as a skill that only specialists can do well, when really its a lot like version control. Dec 03, 2018 the process for attack simulation and threat analysis pasta is a risk centric threat modeling framework developed in 2012.
To prevent threats from taking advantage of system flaws, administrators can use threatmodeling methods to inform defensive measures. Pasta provides an attackercentric analysis structure to help users. Threat modeling is most often applied to software applications, but it can be used for operating systems and devices with equal effectiveness. This method is commonly used to analyze networks and systems and has been adopted as the defacto standard among manual approaches to software threat modeling. Threat modelling examples distributed systems information. Another major event involving the central bank of bangladesh in february 2016 also reveals the effectiveness of phishing.
Larry osterman, douglas maciver, eric douglas, michael howard, and bob fruth gave me hours of their time and experience in understanding threat. Experiences threat modeling at microsoft 3 2 some history threat modeling at microsoft was. Threat modeling, designing for security ebook by adam. Threat modeling attempts to have the architects or developers of any solution or software identify the potential attack vectors against their deployment. The standard does not use a specific model, but instead requires that the model used be consistent in terms of its representation of threats, their capabilities, their qualifications as per the organization being tested, and the ability to repeatedly be applied to future. Threat modeling and risk management is the focus of chapter 5. Real world application threat modelling by example 44con 20 2. One notable example is the case of mattel in april 2015.
An example of application specific objectives could be meeting a customer requirement on pcidss for payments. Understanding the value of its belongings and the nature of its activities can determine a great of scenarios for organizational readiness training. However, threat modeling offers organizations a comprehensive and automated solution that works with existing security controls and software installed to automate a solution that scales your entire sdlc. Threat modelling is a component in security risk analysis, and it is commonly conducted by applying a speci. Complexity analysis for problem definition in an assembleto order process. A short questionnaire about the technical details and compliance drivers of the application is conducted to generate a set of threats. Familiarize yourself with software threat modeling software. Recommended approach to threat modeling of it systems tech. Change business process for example, add or change steps in a process or. Threat modelling 101 attacker centric aka attack trees software, system, design or architecture centric asset centric aka traditional risk analysis 5.
An endpointcentric threat model basically deals with the attacker perspective of looking at the application. Security professionals often argue that such approaches to threat modeling should be classified as the inevitable result of a software centric design approach. Though the approaches differ, and some authors regard threat modeling as an attacker centric activity, some authors claim that it is possible to perform. This section defines a threat modeling approach as required for a correct execution of a penetration testing. Security experts, architects, and business stakeholders can work together in choosing the methodology that fits them best. No professional developer would think of building software of any complexity without a version control system of some form. Adam shostack is responsible for security development lifecycle threat modeling at microsoft and is one. Help with risk analysis defensive help with efficient effort investment offensive 4.
The three main approaches for threat modelling are assetcentric, attackercentric or softwarecentric. Threat modeling high level overview kickoff have the overview of the project get the tlds and prds identify the assets identify use cases draw level0 diagram analyze stride document the findings have a. Architects and developers are usually the most knowledgeable of the functionality of the solution or software, which is why they are usually considered the best to perform the. Typically, threat modeling has been implemented using one of four approaches independently, assetcentric, attackercentric, and softwarecentric. Though the approaches differ, and some authors regard threat modeling as an attackercentric activity, some authors claim that it is possible to perform. Threat modeling is a method of preemptively diagramming potential threats and. Adam shostack is responsible for security development lifecycle threat modeling at microsoft and is one of a handful of threat modeling experts in the world. Identifying potential threats to a system, cyber or otherwise, is increasingly important in todays environment. Asset centric approach is focused primarily on assets and threats to their security attributes confidentiality, integrity and availability.
In this thesis we ask the question why one should only use just one of. Recommended approach to threat modeling of it systems. Jun 30, 2016 the aim of this site is to provide guidance around microsofts threat modeling tool and to share templates and models. Gain holistic visibility into your attack surface with trusted threat modeling software with the proliferation of iot devices, apicentric environments, microservices, and other modern software architecture, enterprise organizations must employ increasingly complex cyber. Newest threatmodeling questions feed to subscribe to. Real world application threat modelling by example 44con 20. Complexity analysis for problem definition in an assembletoorder process. In a nutshell, the asset centric threat modeling can be established mostly based on the digital assets of the institutions.
The twelve threat modeling methods discussed in this paper come from a variety of sources and target different parts of the process. It is a software security requirements management platform that includes automated threat modeling capabilities. Pasta introduces a riskcentric methodology aimed at applying security countermeasures that are commensurate to the possible impact that could be sustained from defined threat models, vulnerabilities, weaknesses, and attack patterns. Apr 22, 2014 approaches to threat modeling attackercentric softwarecentric stride is a softwarecentric approach assetcentric 8. The aim of this site is to provide guidance around microsofts threat modeling tool and to share templates and models. To do that you need to understand the application you are building, examples of. As of version 2016, is offers strong customization capability allowing to map your own threat logic and stencils to it.
Provides a unique howto for security and software developers who need to design secure products and systems and test their designs explains how to threat model and explores various threat modeling approaches, such as asset centric, attacker centric and software centric provides effective approaches and techniques that have been proven at. First, youll discover that the software centric threat modeling approach is greatly enhanced by taking advantage of the microsoft threat modeling tool. Threat modeling involves understanding the complexity of the system and. Software and attack centric integrated threat modeling for. This publication focuses on one type of system threat modeling. Threat modeling has three major categories according to how it is implemented in action.
The company was scammed by chinese phishers and nearly lost three million usd. Threat modelling helps enterprises improve web application security. That is, cyber threat modeling can enable technology profiling, both to characterize existing technologies and to identify research gaps. Evaluation of threat modeling methodologies a case study selin juuso masters thesis may 2019 school of technology information and communication technology. Asset centric, system centric or attacker centric approach to threat modeling. Dobbs jolt award finalist since bruce schneiers secrets and lies and applied cryptography.348 452 64 803 1291 957 1211 1428 381 814 763 210 681 654 1566 1571 1321 11 536 980 1422 1101 29 1197 172 1339 1274 1417 1277 1217 18