--- title: "Secure-by-Design (Devices), Definition | MedTech Terms" description: "Engineering principle of building security in from initial architecture rather than bolting it on. Plain-English Software & AI definition for MedTech teams, wit" lang: en json-ld: | { "@context": "https://schema.org", "@graph": [ { "@type": "DefinedTerm", "@id": "https://medtechterms.com/terms/secure-by-design#term", "name": "Secure-by-Design (Devices)", "description": "Secure-by-design products eliminate entire classes of vulnerabilities through memory-safe languages, least-privilege design, default deny, and threat modeling at architecture phase. 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[Home](/) 2. / 3. [Terms](/terms) 4. / 5. [Software & AI](/terms?cat=Software%20%26%20AI) 6. / 7. Secure-by-Design (Devices) [All terms](/terms) Software & AI [Connected & Cyber-Physical Devices](/ecosystems/connected-devices)[Software Lifecycle](/ecosystems/software-lifecycle) # Secure-by-Design (Devices) Engineering principle of building security in from initial architecture rather than bolting it on. Reviewed by [Christian Espinosa, Founder, Blue Goat Cyber](/authors/christian-espinosa) Last reviewed May 5, 2026 ## Definition Secure-by-design products eliminate entire classes of vulnerabilities through memory- [safe](/terms/safe-note) languages, least-privilege design, default deny, and [threat modeling](/terms/threat-modeling) at architecture phase. CISA promotes secure-by-design as a manufacturer responsibility. What the regulation says Secure-by-design principles are increasingly emphasized by regulatory bodies as a fundamental expectation for medical device manufacturers. The FDA, in its premarket cybersecurity guidance, stresses the importance of incorporating security throughout the [total product lifecycle](/terms/tplc), aligning with secure-by-design concepts. Similarly, international frameworks such as those from the [IMDRF](/terms/imdrf) (International Medical Device Regulators Forum) advocate for proactive cybersecurity measures from the initial design phase. ## What this means in practice Increasingly an expectation in FDA premarket cyber feedback and a procurement criterion for hospital IT. ## Examples - A medical device manufacturer uses a memory-safe programming language for a new implantable device to eliminate common buffer overflow vulnerabilities. - During the design of a connected infusion pump, threat modeling identifies potential unauthorized access vectors, leading to the implementation of strong authentication and encrypted communication protocols. - A software update mechanism for a diagnostic imaging system is designed with a default-deny policy, only allowing signed and verified updates from authorized sources. Common pitfalls - • Failure to conduct thorough threat modeling early in the design process can lead to overlooked vulnerabilities and costly retrofits. - • Relying solely on post-market patching rather than integrating security into the initial design is a common pitfall. - • Assuming that general IT security practices are sufficient for medical devices without considering their unique safety and efficacy requirements is a mistake. - • Neglecting to implement least-privilege principles can lead to excessive access and expanded attack surfaces if a breach occurs. - • Failing to continually update and assess the security posture throughout the device ## Frequently asked questions What is the primary goal of Secure-by-Design for medical devices? The primary goal is to proactively build security into the architecture and design of a medical device, thereby reducing vulnerabilities and mitigating risks from the outset, rather than attempting to add security as an afterthought. How does threat modeling contribute to Secure-by-Design? What is meant by 'least-privilege design' in this context? ## Related terms Grouped by theme ### Editor's picks · Hand-selected related concepts [ Cybersecurity Secure Product Development Framework(SPDF) A documented, risk-based set of processes that build cybersecurity into a medical device across its full lifecycle. ](/terms/spdf)[ Cybersecurity Threat Modeling A structured analysis that identifies how an attacker could compromise a medical device and what controls mitigate each threat. ](/terms/threat-modeling) ### More in Software & AI · Same category [ Software & AI AAMI TIR45(TIR45) AAMI Technical Information Report providing guidance on applying Agile software development practices within an IEC 62304-compliant medical device software lifecycle. ](/terms/aami-tir45)[ Software & AI Adversarial Robustness Resilience of an ML model to inputs deliberately crafted to cause misclassification. ](/terms/adversarial-robustness)[ Software & AI AI/ML-Enabled Medical Device Medical device that uses artificial intelligence or machine learning to perform its intended use. ](/terms/ai-ml-device)[ Software & AI Algorithm Change Protocol(ACP) The detailed procedural section of a PCCP that specifies how planned modifications to an AI/ML model will be developed, validated, and implemented. ](/terms/algorithm-change-protocol) Cited by Where this term appears across MedTech Terms. Ecosystems (2) - [Connected & Cyber-Physical Devices](/ecosystems/connected-devices) - [Software Lifecycle](/ecosystems/software-lifecycle) ## Primary references 3 sources Link health: 3 verified · last checked 2026-06-20 CISA· 1 IMDRF· 1 MDCG· 1 1. [1 CISA Secure by Design Verified CISA · cisa.gov ](https://www.cisa.gov/securebydesign) 2. [2 IMDRF - Software as a Medical Device Verified IMDRF · imdrf.org ](https://www.imdrf.org/working-groups/software-medical-device-samd) 3. [3 MDCG Software Guidance Verified MDCG · health.ec.europa.eu ](https://health.ec.europa.eu/medical-devices-sector/new-regulations/guidance-mdcg-endorsed-documents-and-other-guidance_en) Inline markers like \[1\] jump to the matching reference above. Sponsor note ### Building software-as-a-medical-device? We help SaMD and AI/ML device teams meet IEC 62304 and the FDA's evolving expectations for software cybersecurity. [Book a 30-minute discovery session](https://go.bluegoatcyber.com/meetings/blue-goat-cyber/discovery-session) - No obligation - Expert-led from minute one - NDA available on request MedTech Terms is a community resource sponsored by [Blue Goat Cyber](https://bluegoatcyber.com). Definitions are independent of any vendor. On this term Category Software & AI Sources 3 Updated 5/5/2026 [Compare with another term](/compare?a=secure-by-design) Learn in 60 seconds Card Lesson Quiz Engineering principle of building security in from initial architecture rather than bolting it on. - · Increasingly an expectation in FDA premarket cyber feedback and a procurement criterion for hospital IT. - · CISA promotes secure-by-design as a manufacturer responsibility. Remember this Watch out: Failure to conduct thorough threat modeling early in the design process can lead to overlooked vulnerabilities and costly retrofits. Related terms - [Secure Product Development Framework(SPDF) ](/terms/spdf) - [Threat Modeling ](/terms/threat-modeling) You may also need Auto-suggested from Software & AI and shared keywords. - [Coordinated Vulnerability Disclosure(CVD) ](/terms/cvd) - [CISA Known Exploited Vulnerabilities Catalog(KEV) ](/terms/kev) - [Common Vulnerabilities and Exposures(CVE) ](/terms/cve) - [HSCC Joint Security Plan(HSCC JSP) ](/terms/hscc-jsp) - [LINDDUN ](/terms/linddun) - [MITRE ATT&CK(ATT&CK) ](/terms/mitre-attack) [All Software & AI terms](/terms?cat=Software%20%26%20AI) From the Blue Goat network Related resources and services on this topic. - [ AI SaMD Insights How AI is changing SaMD - risk, regulation, and good machine-learning practice. ](https://ai-samd.com) - [ Med Device Cyber Podcast Conversations with medical device cybersecurity practitioners. ](https://mdcpodcast.com) MedTech Terms An authoritative, plain-language reference for the regulatory, quality, cybersecurity, and software terms that shape modern medical devices. 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