Episode 66 — A.8.25–8.26 — Secure development lifecycle; Application security requirements

A.8.25 requires a secure development lifecycle (SDLC) that embeds security from concept to retirement, not as a late-stage gate. For the exam, describe SDLC phases with explicit security tasks: threat modeling during design; security requirements and acceptance criteria before coding; secure build pipelines with dependency hygiene; code reviews and static analysis during implementation; dynamic testing and abuse-case validation in verification; and hardening, logging, and rollback plans for release. Governance must define roles, entry/exit criteria, and evidence artifacts that demonstrate consistency across teams and technologies. The objective is repeatable assurance—each change carries traceable security rationale—so that risk management is visible to auditors and actionable by engineers. Candidates should be prepared to explain how SDLC controls support PDCA, turning lessons from incidents and tests into updated standards and training.

A.8.26 complements SDLC by mandating clear application security requirements that are risk- and context-driven. Requirements translate policy and threat intelligence into concrete behaviors: authentication strength, authorization models, input validation, output encoding, cryptography, logging fields, privacy-by-design constraints, performance under attack, and service-level expectations for vulnerability remediation. In practice, teams maintain a security nonfunctional requirements catalog mapped to data classifications and architectural patterns (web APIs, event-driven services, mobile apps), plus checklists for common frameworks so developers do not reinvent controls. Pitfalls include vague requirements (“be secure”), frozen checklists that ignore new attack modes, and exceptions granted without expiry or compensating tests. Effective programs version requirements as code in templates and linters, enforce them in CI with policy-as-code, and measure conformance via build breakers and release dashboards. Candidates should connect these controls to evidence—threat models, requirement traceability matrices, test results, and sign-offs—that collectively prove security intent became implemented, verified behavior. Produced by BareMetalCyber.com, where you’ll find more cyber audio courses, books, and information to strengthen your educational path. Also, if you want to stay up to date with the latest news, visit DailyCyber.News for a newsletter you can use, and a daily podcast you can commute with.