Stride threat model pdf

Threat modeling sei digital library carnegie mellon university. From the very first chapter, it teaches the reader how to threat model. Stride is a model of threats developed by praerit garg and loren kohnfelder at microsoft for identifying computer security threats. Pdf a stridebased threat model for telehealth systems. Once the security subject matter experts construct the data flow diagrambased threat model, system engineers or other subject matter. Microsoft security development lifecycle threat modelling. The change in delivery mechanism allows us to push the latest improvements and bug fixes to customers each time they open the tool, making it easier to maintain and use. This session will cover the basic elements of threat modeling, looking at what it does and why it is important. Stride is currently the most mature threat modeling method.

Getting started microsoft threat modeling tool azure. The microsoft threat modeling tool makes threat modeling easier for all developers through a standard notation for visualizing system components, data flows, and. Introduction to threat modeling tm threat modeling as a structured activity for identifying and managing the objects such as application threats. The agenda is well start out by discussing the goals of threat modeling, explain exactly how to do iteven if youre not an expert and. Stride is a model of threats, used to help reason and find threats to a system. The stride threat modeling goal is to get an application to meet the security properties of confidentiality, integrity, and availability cia, along with authorization, authentication, and nonrepudiation. Although microsoft no longer maintains stride, it is implemented as part of the microsoft security development lifecycle sdl with the threat modeling tool, which is still available. Khan and others published a stride model based threat modelling using unified andor fuzzy operator for.

Threat modeling should be part of your routine development lifecycle, enabling you to progressively refine your threat model and further reduce risk. Fox the homeland security systems engineering and development institute hssedi operated by the mitre corporation approved for public release. Spoofing tampering repudiation information disclosure denial of service escalation of privilege. This course takes roughly 2 hours, and includes an exercise and a tool demo. This security threat analysis has important significance for the online banking system. Figure 3 maps threats to the properties that guard against them. Vast vast is an acronym for visual, agile, and simple threat modelling.

Using attack trees to model threats is one of the oldest and most widely applied techniques on cyber. Stride analyzes vulnerabilities against each system component which could be exploited by an attacker to compromise the whole system. The paper identifies that stride is a lightweight and effective threat modeling methodology for cps that simplifies the task for security analysts to identify vulnerabilities and plan appropriate. Threat modeling and stride one way to ensure your applications have these properties is to employ threat modeling using stride, an acronym for spoofing, tampering, repudiation, information disclosure, denial of service, and elevation of privilege. The consecutive threat modeling steps apply to these varying system models. Pdf online banking security analysis based on stride threat. For those unfamiliar with stride as a threat classification model, it is an acronym for. This technique helps in the enumeration of threats based on attack properties. Pdf of some of the figures in the book, and likely an errata list to mitigate the errors that. This ranking helps teams prioritize energy and resources on high ranking assets during a breach in an effort to mitigate damage. Accurate dfds dictate how successful your stride will be 15. Kevin poniatowski, security innovations senior security instructor heads up his rational on why stride is still relevant and useful to both inexperienced and more senior security engineering teams. Crashing windows or a web site, sending a packet and absorbing seconds of cpu time, or routing packets into a black hole.

Learn whats new and important in threat modeling in. For each of these attack properties there is set of security themes. Press question mark to learn the rest of the keyboard shortcuts. Thus it gives a detailed threat analysis of the online banking system. Allowing a remote internet user to run commands is the classic example, but going from a limited user to admin is also eop. A hybrid threat modeling method carnegie mellon university. Pdf a stride model based threat modelling using unified and. Consider how each stride threat could impact each part of the model. The systematic threat analysis methods help but there is no guarantee of finding all or even the most important threats you need to understand the system. Threat modeling as a basis for security requirements. Walking through the threat trees in appendix b, threat trees walking through the requirements listed in chapter 12, requirements cookbook applying strideperelement to the diagram shown in figure e1 acme would rank the threats with a bug bar, although because neither the. The microsoft threat modeling tool 2018 was released as ga in september 2018 as a free clicktodownload. That is, how to use models to predict and prevent problems, even before youve started coding. Rapid threat model prototyping rtmp documents github.

By building data flow diagrams dfds, you identify system entities, events, and boundaries of the system 26. Uncover security design flaws using the stride approach. All things to do with threat and security modeling from examples of public threat models to tools and techniques. Cloud security alliance the treacherous 12 top threats. Please note that sometimes revisiting the threat model might produce no actions other than confirming that the threat model is still up to date. Characterizing the system at the start of the threat modeling process, the security designer needs to understand the system in question completely. Threat dragon td is used to create threat model diagrams and to record possible threats and decide on their mitigations using stride methodology. Experiences threat modeling at microsoft 3 2 some history threat modeling at microsoft was rst documented as a methodology in a 1999 internal microsoft document, \the threats to our products 8. Using the whiteboard to construct a model that participants can rapidly change based on identified threats is a highreturn activity. Designing for security is full of actionable, tested advice for software developers, systems architects and managers, and security professionals. The goal is to provide a high level overview of the process and the use of things. It provides a mnemonic for security threats in six categories. Threat modeling ranks threats during software design identifying which assets or components are most critical to the business and ranks them according to damage a threat would cause to the business.

The way to threat model is too much focus on specifics of how. Threat modeling is a process by which potential threats, such as structural vulnerabilities or the absence of appropriate safeguards, can be identified, enumerated, and mitigations can be prioritized. The purpose of threat modeling is to provide defenders with a systematic analysis of what controls or defenses need to be included, given the nature of the system, the probable attackers profile. Analysis of the requirements model yields a threat model from which threats are identified and assigned risk values. Threat modeling, also called architectural risk analysis, is a security control to identify and reduce risk. Due to the lack of a standard methodology, this paper proposes. A hybrid approach to threat modelling semantic scholar. Advances in intelligent systems and computing, vol 1070. Threat modeling also called architectural risk analysis is an essential step in the development of your application. Threat model 034 so the types of threat modeling theres many different types of threat. The stride threat model helps place threats into categories so that questions can be. System assets, threat agents, adverse actions, threats and their effects alongside their various. The stride was initially created as part of the process of threat modeling. The stride per element approach to threat modeling.

However, using dfds as the only input to threat modeling is limiting because it does not pro. Stridebased threat modeling for cyberphysical systems. The completed threat model is used to build a risk model on the basis of asset, roles, actions, and calculated risk exposure. Survey, assessment, and representative framework april 7, 2018 authors. Stride has been successfully applied to cyberonly and cyberphysical systems.

By applying this method to the online banking system threat analysis, we construct stride threat model on the analysis of the key business data, and then we. The models created there or elsewhere can be meticulously transferred to a highquality archival representation. The way to threat model is too much focus on specifics of how use this framework stride with this diagram type focus on what delivers value by helping people find good threats focus on what delivers value by helping lots of people borrowing a line from the perl folks theres more than one way to threat model. Threat modelling at a whiteboard can be a fluid exchange of ideas between diverse participants. Walking through the threat trees in appendix b, threat trees walking through the requirements listed in chapter 12, requirements cookbook applying stride perelement to the diagram shown in figure e1 acme would rank the threats with a bug bar, although because neither the.