STRIDE (security)

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STRIDE is a model for identifying computer security threats [1] developed by Praerit Garg and Loren Kohnfelder at Microsoft. [2] It provides a mnemonic for security threats in six categories. [3]

Contents

The threats are:

The STRIDE was initially created as part of the process of threat modeling. STRIDE is a model of threats, used to help reason and find threats to a system. It is used in conjunction with a model of the target system that can be constructed in parallel. This includes a full breakdown of processes, data stores, data flows, and trust boundaries. [5]

Today it is often used by security experts to help answer the question "what can go wrong in this system we're working on?"

Each threat is a violation of a desirable property for a system:

ThreatDesired property
SpoofingAuthenticity
TamperingIntegrity
RepudiationNon-repudiability
Information disclosureConfidentiality
Denial of serviceAvailability
Elevation of privilegeAuthorization

Notes on the threats

Repudiation is unusual because it's a threat when viewed from a security perspective, and a desirable property of some privacy systems, for example, Goldberg's "Off the Record" messaging system. This is a useful demonstration of the tension that security design analysis must sometimes grapple with.

Elevation of privilege is often called escalation of privilege, or privilege escalation. They are synonymous.

See also

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References

  1. Kohnfelder, Loren; Garg, Praerit (April 1, 1999). "The threats to our products". Microsoft Interface. Retrieved 13 April 2021.
  2. Shostack, Adam (27 August 2009). ""The Threats To Our Products"". Microsoft SDL Blog. Microsoft. Retrieved 18 August 2018.
  3. "The STRIDE Threat Model". Microsoft. Microsoft.
  4. Guzman, Aaron; Gupta, Aditya (2017). IoT Penetration Testing Cookbook: Identify Vulnerabilities and Secure your Smart Devices. Packt Publishing. pp. 34–35. ISBN   978-1-78728-517-0.
  5. Shostack, Adam (2014). Threat Modeling: Designing for Security. Wiley. pp. 61–64. ISBN   978-1118809990.
  6. "Key OT Cybersecurity Challenges: Availability, Integrity and Confidentiality". tripwire.com. Retrieved 2022-07-20.
  7. "What is the CIA Triad? Definition, Explanation and Examples". WhatIs.com. Retrieved 2022-05-01.