Recommended Free Tools
Security by design means building security requirements, risk analysis, and safer defaults into a product from the start—not adding them after development. It can support business growth indirectly by reducing preventable weaknesses, helping customers evaluate a product’s security, and potentially lowering long-term maintenance work. Those benefits are conditional: they are not a promise of higher revenue or a guaranteed return on investment.
What security by design means
Security by design makes customer security a core product and business requirement. CISA describes the approach as prioritizing customer security during product design so that fewer exploitable flaws reach customers. It also calls for products to be secure by default: important protections should work out of the box rather than depend on customers discovering and correctly configuring them. CISA names multifactor authentication, logging, and single sign-on as examples of capabilities that should be available without extra charge. CISA’s Secure by Design guidance explains the principles.
The approach changes who owns the problem. Security is not solely a task for engineers near release; technology providers and their executives are responsible for customer security outcomes. Joint guidance from CISA and international partners emphasizes ownership, transparency, accountability, and leadership from the top. The joint announcement describes those principles.
How teams put it into practice
Security by design is a repeatable part of the software development lifecycle (SDLC), not a single review or tool. NIST’s Secure Software Development Framework (SSDF), version 1.1, published February 3, 2022, is designed to integrate secure development practices into existing SDLC models. NIST says these practices are intended to reduce vulnerabilities in released software, limit the impact of exploitation, address root causes, and give software suppliers and acquirers a shared vocabulary.
#1 Best Overall
- Set requirements early. Identify security needs arising from business objectives and risk strategy, as well as applicable laws and regulations. Keep the requirements available throughout the SDLC so teams can use them as the product changes.
- Use threat modeling before implementation. Threat modeling examines what needs protection, how it might be attacked, and where an attacker could interact with the product. Attack modeling and attack-surface mapping can help make that analysis concrete. Record risks and connect each one to potential design protections.
- Document decisions and exceptions. Keep a record of requirements, identified risks, design choices, unmet requirements, and alternative mitigations. That record gives the team something specific to reassess when the product or threat environment changes.
- Review the design before it moves forward. NIST’s DevSecOps guidance recommends review by qualified people who were not involved in the design, automated review in the toolchain, or both. If a design is unsatisfactory, return it for improvement before implementation, when design changes are generally less costly.
- Prefer proven shared security services where appropriate. Rather than building every control from scratch, teams can consider standard logging and identity services, including multifactor authentication. The choice should fit the product’s risks and requirements.
- Make ownership organizational. Executive leadership, transparency, and accountability need to support the engineering work. A last-minute security task cannot substitute for clear responsibility across the organization.
These practices are set out in NIST NCCoE’s DevSecOps Appendix C, which covers requirements, risk analysis, design records, shared services, and reviews. For a practical guide to applying and evaluating secure development practices, the CIS and SAFECode SSDF Implementation Guide, published October 23, 2025, includes role-based guidance, artifact-driven verification, and risk-based evaluation for software organizations and their customers.
How security by design can support business growth
The business case is a chain of possible effects, not a guaranteed financial result. Fewer preventable vulnerabilities may mean less exposure to incidents and less disruption from responding to them. Safer defaults can reduce how much a customer’s security depends on configuring a product correctly. Documented requirements, risk decisions, and reviews can also give customers and procurement teams concrete evidence to evaluate.
Rank #2
Joint guidance from CISA, NSA, the FBI, and international partners acknowledges that taking ownership of customer security can increase development costs. It also identifies potential longer-term benefits: better customer security, a lower likelihood of compromise, stronger developer reputation, and reduced maintenance and patching costs. The same guidance cautions that secure-by-design products can still contain vulnerabilities. Read the joint secure-by-design guidance for its discussion of costs and potential benefits.
No quantified ROI figure is established by the cited guidance. A company should not assume a specific payback period, revenue increase, or reduction in breach costs. Instead, build the case around the product’s risks, customers, and starting point, and track internal measures such as whether requirements are addressed before implementation, whether key risks have documented mitigations, and whether design reviews surface issues early enough to change the design. Changes in vulnerability handling and customer security outcomes can also be monitored over time. These are useful internal measures, not externally validated benchmarks.
How to evaluate a security-by-design approach
Whether you are assessing your own development process or comparing outside help and tools, use criteria tied to the product rather than relying on a broad security label.
- Risk coverage: Which product risks, attack surfaces, and security requirements does the approach address?
- Workflow fit: Can the practice be repeated within the team’s SDLC as the product changes?
- Evidence: Does it preserve design decisions, review results, and other artifacts useful for governance or customer evaluation?
- Maintenance responsibility: Who monitors components, handles vulnerabilities, and updates controls?
- Defaults and access: Are important protections enabled by default and available to customers without extra charge?
- Review quality: Where appropriate, are design decisions reviewed by qualified people who were not involved in making them?
Further reading on threat modeling
For a deeper introduction to the practice, Adam Shostack’s Threat Modeling: Designing for Security is a relevant optional resource. A book can help explain the method, but it does not replace threat analysis tailored to a particular product or a broader security program.
Quick Recap
Rank #4
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
