Secure by Design for Modern Software
Turn Secure by Design from a principle into an engineering practice. Aptori continuously validates whether the security controls built into software actually work as applications change.
Validate.
Prove.
Build security into the product from the beginning.
Secure by Design is an approach to software development in which security is treated as a core product requirement from the beginning—not an optional feature or a test performed before release.
Software is designed with secure defaults, explicit trust and authorization boundaries, reduced attack surface, and controls intended to prevent entire classes of vulnerabilities. Those controls are then continuously tested as the software changes.
Secure by Design also shifts more responsibility toward the technology provider: customers should not have to compensate for insecure product architecture or unsafe default configurations.
Secure by Design is broader than shifting security left.
Shift-left security moves testing earlier in development. Security by default starts products from safer configurations. Secure by Design encompasses both ideas and extends them across architecture, implementation, product behavior, vulnerability handling, and continuous verification.
Start with security requirements
Define trust boundaries, identities, authorization models, sensitive data, attack surfaces, and expected security behavior before implementation.
Make the safe path the easy path
Reduce dependence on customer hardening by shipping products with secure configurations and controls enabled by default.
Prevent recurring weaknesses
Use secure patterns, code analysis, dependency governance, testing, and developer feedback to reduce vulnerability classes over time.
Continuously verify behavior
Test whether the implemented application still enforces its security boundaries as code, APIs, dependencies, and workflows change.
Build securely. Validate continuously. Prove the outcome.
Aptori turns Secure by Design into a repeatable engineering loop that follows every meaningful software change.
Secure by Design requires proof that controls actually work.
Aptori tests the boundaries that matter—authorization, objects, workflows, APIs, dependencies, and business logic—and uses runtime validation where proof is needed.
Verified: Aptori attempts to cross that boundary and records the result.
Cover the application stack without creating another set of silos.
Code, dependencies, APIs, runtime behavior, and remediation share application context inside the Aptori platform.
Secure Code Review + AI SAST
Analyze control flow, data flow, authorization logic, business logic, and remediation context in human- and AI-generated code.
AI-powered static application security testing →SCA + SBOM
Track vulnerable dependencies, reachability, EPSS, KEV, open source licenses, SBOMs, containers, and supply chain exposure.
Software composition analysis and SBOM security →API Security Testing
Validate authentication, authorization, BOLA/BOPLA, object ownership, workflows, state, and application-specific business logic.
API security testing for authorization and business logic →Semantic Runtime Validation
Model application context and prove whether expected security controls can be violated in real application behavior.
Semantic Runtime Validation →Continuous Vulnerability Management
Correlate findings, prioritize exploitability and business impact, manage remediation, and verify closure.
Continuous vulnerability management →AI Security Engineer
Use AI agents to investigate findings, gather context, guide remediation, validate fixes, and generate security evidence.
AI Security Engineer →The application boundary now includes agents, models, and tools.
For AI applications, secure design must extend beyond code to prompts, model interactions, agent identities, MCP servers, tools, and data access.
Turn engineering evidence into assurance evidence.
The same evidence used to verify software security can support product-security, vulnerability-management, and audit requirements.
Connect design principles to continuous application assurance.
Secure by Design questions.
What is Secure by Design?
Secure by Design makes security a product property: secure defaults, security boundaries, testing, remediation, and verification are built into how software is engineered rather than added at the end.
How is Secure by Design different from shift left?
Shift left moves testing earlier. Secure by Design is broader: it addresses architecture, secure defaults, implementation, runtime behavior, remediation, and verification throughout the software lifecycle.
Why does Secure by Design require runtime validation?
Code and architecture show how a control is intended to work. Runtime validation determines whether that control can actually be bypassed when the application is exercised.
How does Aptori support Secure by Design?
Aptori connects code analysis, software composition analysis, API security testing, Semantic Runtime Validation, vulnerability management, remediation, and security evidence through a unified application security platform.
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